The Effect Of Gas Turbine Blade Tip Injection On The Flow...

EFFECT OF GAS TURBINE BLADE TIP INJECTION ON THE FLOW CHARACTERISTICS AND THE DISTRIBUTION OF HEAT TRANSFER COEFFICIENT OVER BLADE SURFACES Ahmed A. Abdelsamee 1, Bassily Hanna 2, El-Batsh H.3, Mohammed R. Diab 4 1 Assistant Lecturer, Mechanical Engineering and energy Dep., Faculty of Engineering, South Valley University, Qena, Egypt 2Professor, Mechanical power engineering and energy Dep., Faculty of Engineering, Minia University, Minia, Egypt 3 Professor, Mechanical power Engineering and energy Dep., Benha Faculty of Engineering, Benha University, Benha, Egypt 4 Professor, Mechanical power Engineering and energy Dep., Faculty of Engineering, Minia University, Minia, Egypt Abstract Gas turbine blades are subjected to high thermal loads caused by the high temperature of the gases entering the cascade. The pressure difference between the blade pressure surface and the blade suction surface induces tip leakage flow, which increases heat transfer in the blade tip region. In this paper, the three dimensional flow and heat transfer are examined for an internally cooled blade cascade with tip injection using numerical technique. The three-dimensional turbulent flow was obtained by solving Reynolds averaged Navier Stokes equations and the energy equation. The Shear Stress Transport (SST) k-ï  · model was employed to represent turbulent flow. The cooling air is injected from eleven holes with 3 mm diameter arranged along the blade chamber line. The operating and boundary conditions

Attention Deficit Hyperactivity Disorder ( Adhd ) - 798 Words

Asperger s What is Asperger s syndrome (AS)? AS is a social disorder linked to autism which is often misdiagnosed as attention deficit disorder (ADD) or attention deficit hyperactivity disorder (ADHD) because of their similar symptoms. The name comes from Hans Asperger, an Austrian that examined autistic children and used the term autism to identify them (Grinker 56). According to Bibbi Hagberg et. Al. , Approximately, 30–50 % of individuals with AS have symptoms (inattention and overactivity in particular) consistent with a diagnosis of attention-deficit/hyperactivity disorder (ADHD). Research indicates individuals with AS may experience challenges with social interaction, coordination capabilities, and the ability to understand†¦show more content†¦(Examining the Benefit of Including a Sibling in Story-Based Interventions With a Child With Asperger Syndrome 180) CSCs are able to do this effectively because they require the individual to use his or her conversation skills as w ell as his or her visual strengths. (Examining the Benefit of Including a Sibling in Story-Based Interventions With a Child With Asperger Syndrome 180) some other things a CSC does include helping to identify any problems the individual with AS may be having and also helping him or her find appropriate solutions for those problems. (Examining the Benefit of Including a Sibling in Story-Based Interventions With a Child With Asperger Syndrome 180) Medication is another treatment for AS. Although medication cannot cure AS, it may help control some of the symptoms (particularly the ones that match up with ADD and ADHD) so that the individual with AS is able to function normally or at least as normal as is possible for the individual taking the medication. The downside of medication since every individual is affected differently is that it can take several months or sometimes even years to find a medication that works for a particular individual. On the upside, it is completely fine if one medication or the other does not work because just as there are many different types of people with AS there are also many different kinds of medication for people with AS. Group therapy is an AS treatment method a psychologist may use in order toShow MoreRelatedAttention Deficit Hyperactivity Disorder ( Adhd )1710 Words   |  7 Pages Attention-deficit hyperactivity disorder or ADHD which is often referred to as childhood hyperactivity, it s a severe and chronic disorder for children. It is one of the most prevalent childhood disorders, and affects 3% to 5% of the school-age population. Boys outnumber girls three or more to one. Children with ADHD can experience many behavioral difficulties that often manifest in the form of inattention, being easily distracted, being impulsive, and hyperactivity. As a result, children withRead MoreAttention Deficit Hyperactivity Disorder ( Adhd )1744 Words   |  7 PagesI chose to research Attention-Deficit Hyperactivity Disorder, otherwise known as ADHD, in culture and child development for the following reasons. First, it is important as educators that we understand the difference between restlessness and Attention-Deficit Hyperactivity Disorder in children. Secondly, we must be conscious of the origins of ADHD, how to recognize it, the myths and prejudices against it, and kn ow the most appropriate intervention strategies. 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While much is known about these disorders and how they affect the education of children, there are only a few known methods that consistently help an affected child focus and target in on what they need to learn. Medication for children With Attention Deficit (Hyperactivity) Disorder must be used as an aid to help the affected child to focus and comprehend information being presented to them. Children with Attention DeficitRead MoreAttention Deficit Hyperactivity Disorder ( Adhd )1552 Words   |  7 PagesATTENTION DEFICIT HYPERACTIVITY DISORDER Seth was a second grader at West Elementary. He constantly got reprimanded by his teachers for not paying attention in class. He could not understand the information given to him during the school day. He thought he was stupid and useless. But he was not. His parents got him tested by a doctor for ADHD. He is one of many kids in the United States who have been recognized as having it. Attention Deficit Hyperactivity Disorder is a major issue in the educationRead MoreAttention Deficit Hyperactivity Disorder ( Adhd )978 Words   |  4 Pagesin diagnoses of attention deficit hyperactivity disorder (ADHD) in children since the 21st century. Per the Centers for Disease Control and Prevention the increase has been seen as a difference from, â€Å"7.8% in 2003 to 9.5% in 2007 and to 11.0% in 2011† (p. 4). Many questions arise concerning why the numbers are on the rise, especially when boys are 7.6 percent more likely than girls to receive the diagnosis of ADHD. When should the line be drawn between a disorder, and hyperactivity that comes withRead MoreAttention Deficit Hyperactivity Disorder ( Adhd ) Essay700 Words   |  3 PagesWhat is ADHD? Attention Deficit Hyperactivity Disorder (ADHD) affects almost 10% of American children between 13 and 18 years old, as well as 4% of U.S. adults over 18. 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New faces Essay Example For Students

New faces Essay Outline1 The arts lose some heroes in Congress, but gain a sense of hope  2 Lobbying still required  3 Counting the losses  4 Bill Clinton: On the Record   The arts lose some heroes in Congress, but gain a sense of hope   After 12 years of Republican Administrations that were, at best, indifferent to the nations cultural communitymore often inhospitable and at times outright hostilethe dawn of the Clinton era spells relief to artists and arts professionals. When, during the early stages of the Presidential campaign, it looked as though George Bush was unbeatable, malaise gripped the arts communityfour more years of eroded policy and shrinking budgets at the National Endowment for the Arts, four more years of battling government bureaucrats fueled by the religious Right, four more years of second-class status in a blighted national economy. But as the Democrats campaign picked up steam and a power shift in the White House actually began to seem possible, the political despair turned to hopeand then to near euphoria on Nov. 3. The new occupant of the White House is just one of many new faces in Washington. When the 103rd Congress convenes later this month, its members will include 110 new representatives to the Housethe most in 44 yearsand 12 new senators. The nations electorate turned out in the greatest force since 1972 and nearly doubled the number of women, African Americans and Hispanics who will represent them. Youth, gender and political affiliationboth houses remain solidly Democraticpromise to impart a more liberal cast to Capitol Hill politics, and the country is looking forward to a more cooperative relationship between the Administration and Congress. Lobbying still required   Even diehard cynics believe that with a Democratic Administration and Congress, legislation will actually be crafted and moved through the legislative process with the distinct possibility of becoming law, rather than continuing the tiresome, endless dance of compromises and vetoes that afflicted the federal government since Ronald Reagan took office. Still, the arts community will have ample need for its recently honed lobbying skills. While the President-elect went on public record during the campaign as supporting a restriction-free NEA and freedom of artistic expression (see sidebar), there are still enough foes in Congress to make the agencys upcoming reauthorization anything but smooth. Acting NEA chairman Anne-Imelda Radicewho told members of the National Council on the Arts that she was proud to have served the Endowment and will leave in January with no regretslanded a seemingly gratuitous parting shot in November by vetoing grants to the National Alliance of Media Arts Centers for three gay and lesbian film festivals, ensuring that her legacy at the agency will be remembered as politically motivated and anti-gay. The prospective designation of a new Arts Endowment chairman by a more sympathetic Administration was generated an avalanche of speculation in the arts community within weeks of the election. Names mentioned for the position ranged from off-repeated ones from the past to highly original new ideas, including several people well known to the theatre community, such as director and former Yale School of Drama dean Lloyd Richards; New York State Arts Council chairman Kitty Carlisle Hart; actress Lauren Bacall and Dayton Hudson Foundation chair Cynthia Mayeda. Other names linked with the position include former New York University president and former Indiana congressman John Brademas; Alberta Arthurs, director of the Rockefeller Foundations arts and humanities division; former National Gallery of Art director J. Carter Brown; Mary Schmidt Campbell, dean of NYUs Tisch School of Arts; Anne Hawley, director of Bostons Isabella Stewart Gardner Museum and former executive director of the Massachusetts Council on the Arts and Humanities; New York City cultural affairs commissioner Luis Cancel; and Clinton campaign senior adviser Deborah Sale, who assisted Joan Mondale in the Carter Administration. Paul Slabolepszy: coming of age in the cradle of apartheid EssayDeborah M. Sale, senior advisor to the Clinton/Gore campaign: A Clinton Administration would take the NEA out of the political arena, returning the agency to its tradition of bipartisan cooperation. We would strengthen the peer process, strengthen the Council through appointments of merit. I believe that if we had had stronger leadership from President Bush, debate in Congress would not have reached the fever point it did. Bill Clinton would step forward and put out those fires. We in the Democratic Party were very careful this year to include the arts in our party platform, to be clear about where we stood. Our platform reflects Governor Clintons view about the arts. Arkansas was one of the first states in the nation to require a unit of fine arts for high school graduation. I think it is very important to expand the Endowment beyond the traditional, as was done in the Carter Administration. There are many organizations in minority communities all over this country that have become stronger and tougher because the times have been so hard. With a little bit more focus and encouragement from the federal government, I think those organizations could blossom. Unfortunately, with increased funding from the NEA, the states, instead of using the additional money to expand funding for the arts, essentially just absorbed that money and cut their own arts funding. The federal money has replaced the states money, instead of adding on to the states money. One could argue all night about what is the proper formula. But money was shifted to the states without much regulation, and the result has been less funding for the arts across the board in this nation. Excerpts from statements made at an ArtTable Forum, Election 92: Defining Arts Policy, co-sponsored by the Independent Committee on Arts Policy. Cliff Fannin Baker, producing artistic director, Arkansas Repertory Theatre:   At Arkansas Rep, we know firsthand that President-elect Clinton and Hillary are supportive of the arts. They are subscribers and contributors; they have hosted dinners in their home for potential corporate donors; they attend. More than once theyve slipped into the balcony on a Sunday evening because they wanted to see the show that was running. There was no fanfare, no hand-shaking, just a young governor and his wife who found theatre stimulating, provocative and entertaining. Ive no doubt there will be a new vision and vitality for the National Endowmenta vision that embraces freedom of expression and recognizes that governmental support is crucial.

Morality of birth control free essay sample

Rhetorical analysis of Morality of birth control Imagine the world without birth control how it will be like? His or her ability to prevent or delay pregnancy is fundamental to his or her ability to choose how he or she lives our lives. Every female holds the right to decide if and at what time the wants to become pregnant. A speech by Margret Sanger â€Å"The morality of birth control† took place in New York 1921. It was the last meeting in a three days conference discussing the necessity of birth control use. Margaret Sanger raised the question of morality of birth control speaking to this topic supporting her point of view with a number of ethos, logos and using some pathos as well. First, during in the speech, she provided her argument to the audience with hope and understanding the importance of reducing population growth. When Margaret Sanger says, â€Å"If we cannot trust woman with the knowledge of her own body, then I claim that two thousand years of Christian teaching has proved to be a failure. We will write a custom essay sample on Morality of birth control or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page † She was trying to make angry her audience by criticizing their religion. She also was trying to give contraceptive knowledge to her audience, saying, â€Å"Birth control should be available to every adult and woman. † She created a curious structure ethos is considering education of people. The most important subject of the Nba 2 Speech connected with women and their right to most recent scientific knowledge about body. Her point expressed the fact of church society keeping women in fear and ignorance in the past. Second, Sanger presented emotions that had touched many audiences in the speech. When Sanger says, â€Å"The selfish gratification of temporary desire at the expenses of suffering to lives that will come may seem very beautiful to some, but it is not our conception of civilization, or is it our concept of morality. † Her goal was to get away from ignorance and indifference to creation of society beginning on the level of forming a family. When Sanger says that the first group in society is, â€Å"Those intelligent and wealthy members of the upper classes who have obtained knowledge of birth control and exercise it in regulating the size of their families. † She recognized the women that have gotten birth control and used it correctly as the most respectable and moral members of the community. This is one of the examples of pathos. Moreover, the praise and recognition is also mixed in with more of Sanger’s methods. Sanger says that the third group in society is, â€Å"Those irresponsible and reckless ones. † She is trying to make the audience angry. Besides, she used her anger to verbally fight the people in her audience that do not believe birth control is moral. Finally, Sanger combined pathos, ethos and logos in order to make sense about the morality. Frist, she desired to stop the source of disease, insanity and lowering the standards of civilization. Second, she mentioned the wise part of population that they have all the right to speak for themselves. Lastly, she brought up an opportunity of wise people creating real moral society. Nba 3 In conclusion, Distributing information about contraception was illegal under the Comstock laws passed by congress in 1872. In 1946 Sanger challenged these laws by opening the first family planning clinic in New York. Margaret Sanger shows how much of an influence she had in the birth control movement in this speech. She completed successfully a lot with her speech that was filled with sympathy, emotion and logical explanation. Morality of birth control free essay sample Rhetorical analysis of Morality of birth control Imagine the world without birth control how it will be like? His or her ability to prevent or delay pregnancy is fundamental to his or her ability to choose how he or she lives our lives. Every female holds the right to decide if and at what time the wants to become pregnant. A speech by Margret Sanger â€Å"The morality of birth control† took place in New York 1921. It was the last meeting in a three days conference discussing the necessity of birth control use. Margaret Sanger raised the question of morality of birth control speaking to this topic supporting her point of view with a number of ethos, logos and using some pathos as well. First, during in the speech, she provided her argument to the audience with hope and understanding the importance of reducing population growth. When Margaret Sanger says, â€Å"If we cannot trust woman with the knowledge of her own body, then I claim that two thousand years of Christian teaching has proved to be a failure. We will write a custom essay sample on Morality of birth control or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page She was trying to make angry her audience by criticizing their religion. She also was trying to give contraceptive knowledge to her audience, saying, â€Å"Birth control should be available to every adult and woman. † She created a curious structure ethos is considering education of people. The most important subject of the Nba 2 Speech connected with women and their right to most recent scientific knowledge about body. Her point expressed the fact of church society keeping women in fear and ignorance in the past. Second, Sanger presented emotions that had touched many audiences in the speech. When Sanger says, â€Å"The selfish gratification of temporary desire at the expenses of suffering to lives that will come may seem very beautiful to some, but it is not our conception of civilization, or is it our concept of morality. † Her goal was to get away from ignorance and indifference to creation of society beginning on the level of forming a family. When Sanger says that the first group in society is, â€Å"Those intelligent and wealthy members of the upper classes who have obtained knowledge of birth control and exercise it in regulating the size of their families. She recognized the women that have gotten birth control and used it correctly as the most respectable and moral members of the community. This is one of the examples of pathos. Moreover, the praise and recognition is also mixed in with more of Sanger’s methods. Sanger says that the third group in society is, â€Å"Those irresponsible and reckless ones. † She is trying to make the audience angry. Besides, she used her anger to verbally fight the people in her audience that do not believe birth control is moral. Finally, Sanger combined pathos, ethos and logos in order to make sense about the morality. Frist, she desired to stop the source of disease, insanity and lowering the standards of civilization. Second, she mentioned the wise part of population that they have all the right to speak for themselves. Lastly, she brought up an opportunity of wise people creating real moral society. Nba 3 In conclusion, Distributing information about contraception was illegal under the Comstock laws passed by congress in 1872. In 1946 Sanger challenged these laws by opening the first family planning clinic in New York. Margaret Sanger shows how much of an influence she had in the birth control movement in this speech. She completed successfully a lot with her speech that was filled with sympathy, emotion and logical explanation.