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<b><span style="font-size:16.0pt; color:#1F497D">Department of Electrical and Computer Engineering</span></b><span style="font-size:16.0pt; color:#1F497D"></span></p>
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<b><span style="font-size:16.0pt; color:#1F497D">Materials Engineering Program</span></b></p>
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<b><span style="font-size:14.0pt; color:#1F497D">Center for Integrated Bio and Nano Systems</span></b></p>
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<b><span style="font-size:14.0pt; color:#1F497D"> 10:30 a.m., October 23</span></b><b><span style="font-size:14.0pt; color:#1F497D">, 2020</span></b><span style="font-size:14.0pt; color:#1F497D"></span></p>
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<b><span style="font-size:14.0pt; color:#1F497D">Join Zoom Meeting</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"; color:#1F497D"></span></p>
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<b><span style="font-size:14.0pt; color:#1F497D">Meeting ID: 845 619 943</span></b></p>
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<b><span style="font-size:14.0pt; color:#1F497D">Password: 016104 </span></b></p>
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<b><span style="font-size:20.0pt; color:#1F497D"></span></b><b><span style="font-size:20.0pt; color:#1F497D">Additive Manufacturing: Offering a paradigm shift in design of turbine hot gas path components<br>
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<b><span style="font-size:18.0pt; color:#1F497D">Srinath V. Ekkad </span></b></p>
<div align="center" style="text-align:center"><span style="font-size:18.0pt; color:#1F497D"></span><span style="font-size:16.0pt; color:#1F497D"></span><span style="font-size:16pt; color:rgb(0,36,81)"></span><span style="font-size:16pt; color:rgb(0,36,81); font-family:"Times New Roman",Times,serif">Department
Head and RJ Reynolds Professor</span></div>
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<div align="center" style="text-align:center"><span style="font-family:"Times New Roman",Times,serif; font-size:16pt; color:rgb(0,36,81)">Mechanical & Aerospace Engineering</span></div>
<div align="center" style="text-align:center"><span style="font-family:"Times New Roman",Times,serif; font-size:16pt; color:rgb(0,36,81)">North Carolina State University</span></div>
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<b><span style="color:#1F497D">Abstract</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">:</span><span style="color:#1F497D"> Gas turbine hot section components are being pushed to the limit with every increasing combustion
firing temperatures and improved expectations of life and durability. Gas path components inside gas turbines see some of the harshest conditions including high pressure and temperatures. It is imperative that heat transfer plays a major role in the evaluation
and survival of these components. An overview of the challenges in gas turbine heat transfer measurements and design of cooling systems will be discussed in this presentation. With the advent of additive manufacturing, the designs of internal cooling feature
options are unlimited. With that in mind, detailed heat transfer measurements are presented for complex internal cooling channels with and without rotation to evaluate performance and applicability of such cooling designs to turbine blade cooling. Aspect of
additively manufactured complex designs as a tool to enhance heat transfer compared to conventional manufacturing methods are discussed. The cooling channels have features such as ribs, dimples, impinging jets and a combination of these features. The challenge
of making detailed measurements inside such rotating channels is displayed through the measurements. In addition, some examples of additively designed geometries are demonstrated. </span><span style="color:#1F497D"></span></p>
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<b><span style="color:#1F497D"><img size="58543" tabindex="-1" style="max-width:100%; height:auto" data-outlook-trace="F:3|T:3" src="cid:2ca2b572-7983-4301-b791-53219e4a3aaa"><br>
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<b><span style="color:#1F497D">Short Bio</span></b><span style="color:#1F497D">: </span><span style="color:#1F497D">
<b>Dr. S. V. Ekkad</b> is the Department Head and RJ Reynolds Professor in the Mechanical & Aerospace Engineering Department at North Carolina State University since September 2017. He previously served as the Associate Vice President for Research Programs
at Virginia Tech. He also held the title of Rolls-Royce Commonwealth Professor for Aerospace Propulsion Systems at Virginia Tech. He was also the Founder and Director of the Rolls-Royce University Technology Center for Advanced System Diagnostics at Virginia
Tech, one of 30 centers around the world, prior to joining NC State. He was in the Mechanical Engineering department at Virginia Tech from August 2007 to September 2017 after 9 years at LSU and 2 years at Rolls-Royce Allison Engine Company in Indianapolis.
He received his Ph.D. from Texas A&M University and M.S. from Arizona State University. He has over 25 years of experience in heat transfer related research. He has published over 250 journal & conference articles, three patents and co-authored a book and
three book chapters. He currently has funding from Solar Turbines, and Trilotus Aerospace Systems/Chromalloy. He has been working on gas turbine cooling and heat transfer issues since 1989 including a stint as a design engineer at Rolls-Royce, Indianapolis
before his academic career. Dr. Ekkad has also served as a summer faculty fellow at AFRL, Dayton in 2003. He is well known for his contributions to heat transfer experimental methods. In 2004, he received the inaugural ASME Bergles/Rohsenow Young Investigator
in Heat Transfer Award for significant contributions to the field of heat transfer by a researcher under the age of 36. He is also the Editor-in-Chief for the ASME Journal for Thermal Science and Engineering Applications.<br>
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<span style="color:#1F497D"></span><span style="color:rgb(23,78,134); font-family:"Times New Roman",Times,serif"></span><span style="color:rgb(23,78,134); font-size:11pt; font-family:"Times New Roman",Times,serif">Please contact Dr.
</span><span style="color:rgb(23,78,134); font-size:11pt; font-family:"Times New Roman",Times,serif">Cunjiang Yu <cyu13@Central.UH.EDU></span><span style="color:rgb(23,78,134); font-size:11pt; font-family:"Times New Roman",Times,serif"> or Jiming Bao (jbao@uh.edu)
if you want to meet with the speaker.</span></p>
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