In high-pressure turbines, there is a large difference in temperature between the mainstream and the turbine blade surface. Most of the turbine blade tip heat transfer studies were conducted under the assumption that the Over-Tip-Leakage (OTL) flow field
Dongjie Yan +6 more
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Effect of Mesh Topologies to Predict Cooling Effect on Evaporative Cooling Duct
Abstract This paper examines the effect of different mesh types on a numerical study of evaporative cooling in the chimney. This research is a follow-up study from previous research. The test specimen used is an evaporative chimney design with the addition of a nozzle arrangement in it.
A Jamaldi +3 more
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Numerical simulation of film cooling a turbine blade through a row of holes
We undertake a numerical three dimensional study of the interaction of a row of discrete jets in a wall with a transversal compressible flow for different injection rate (M=0.3, 0.5, 0.7 and 1.4).
Djamel Cherrared
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Research on coupled heat transfer of film cooling in LOX/GH2 thrust chambers
To better understand the performance of gaseous film cooling near the injector region in the LOX/GH2 thrust chambers, a methodology is employed to simulate the coupled heat transfer of the film cooling in thrust chambers with regenerative cooling.
Jixin XIANG, Bing SUN
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Effectiveness of hand cooling and a cooling jacket on post‐exercise cooling rates in hyperthermic athletes [PDF]
AbstractThis study compared the effects of a hand cooling glove (∼16°C water temperature; subatmospheric pressure of −40 mmHg) and a cooling jacket (CJ) on post‐exercise cooling rates (gastrointestinal core temperature, Tc; skin temperature, Tsk) and cognitive performance (the Stroop Colour–Word test). Twelve male athletes performed four trials (within
Tessa Maroni +7 more
openaire +3 more sources
Analysis of sweeping jet and film composite cooling using the decoupled model
The heat transfer process of the sweeping jet and film composite cooling (SJF) structure of the turbine blade leading edge is complex. The current work divides the overall cooling effectiveness of the SJF into the impingement heat transfer effectiveness,
Kong Xiangcan +6 more
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Parametric Studies of Laminated Cooling Configurations: Overall Cooling Effectiveness
Combing the advantages of film cooling, impingement cooling, and enhanced cooling by pin fins, laminated cooling is attracting more and more attention.
Chen Wang, Chunhua Wang, Jingzhou Zhang
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Experimental and numerical study of a multi-unit evaporative cooling device in series
In this study, the performance of an evaporative cooling unit device based on the M-cycle cooling principles is evaluated experimentally. Numerical models of the experimental prototype and its scale model have been developed by using CFD software ...
Jing Lv, Jing Yi, Yijun Fu, Hongzhi Liu
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Investigation on the Effect of Impingement Chamber Structure and Cooling Unit Number on Composite Cooling [PDF]
In order to deeply explore the influence and mechanism of the impingement chamber structure and the number of cooling units on the film cooling performance.
J. Liu, Z. Zhu, J. Chang, S. Ma, J. Sun
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Conjugate Heat Transfer Simulation of Overall Cooling Performance for Cratered Film Cooling Holes
Film cooling is widely applied as an effective way to maintain the turbine blade temperature at an acceptable level. The present paper investigates the overall cooling effectiveness and flow structure by performing conjugate heat transfer simulations for
Chao Zhang +3 more
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