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Author:

Wang, Xian (Wang, Xian.) | Shangguan, Yanqin (Shangguan, Yanqin.) | Zhang, Hu (Zhang, Hu.) | Li, Yueming (Li, Yueming.)

Indexed by:

SCIE EI CPCI-S Scopus

Abstract:

Massively parallel simulation based on hybrid thermal lattice Boltzmann method (HTLBM) is performed to analyze the near-wall flow and heat transfer characteristics in compound angled film cooling. Multiple graphic processing units (Multi-GPUs) are used to speed up the computations. The effect of compound angle on the instantaneous flow characteristics and cooling performance with various blowing ratios and inclined angles are studied in detail. In the simulation, three compound angles of beta = 15 degrees, 30 degrees, 450 degrees are considered. The inclined angles of coolant jet to the flat surface are set to alpha= 30 and alpha = 600, respectively. The blowing ratios are BR = 0.5 and BR = 1.0. It is observed that the application of compound angle enhances the mixing between the crossflow and the jet flow, especially for the large-blowing-ratio cases. The detachment of the coolant jet is reduced by applying compound angle, which results in the increasing of film cooling effectiveness, particularly in the case of small jet inclined angle a. Moreover, to reasonably evaluate the uniformity of coolant film in compound angled film cooling, a novel coefficient (COU) affording a wide application is proposed in the present work. The results show that the coolant-film uniformity is decreased by the application of compound angle. (C) 2017 Elsevier Ltd. All rights reserved.

Keyword:

Compound angle Film cooling Hybrid thermal lattice Boltzmann method Multiple graphic processing units Uniformity of coolant film

Author Community:

  • [ 1 ] [Wang, Xian; Shangguan, Yanqin; Zhang, Hu; Li, Yueming] Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China
  • [ 2 ] [Wang, Xian]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China
  • [ 3 ] [Shangguan, Yanqin]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China
  • [ 4 ] [Zhang, Hu]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China
  • [ 5 ] [Li, Yueming]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China

Reprint Author's Address:

  • Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Key Lab Environm & Control Flight Vehicle, Sch Aerosp, Xian 710049, Shaanxi, Peoples R China.

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Source :

APPLIED THERMAL ENGINEERING

ISSN: 1359-4311

Year: 2018

Publish Date: JAN 25

Volume: 129

Page: 1670-1681

Language: English

4 . 0 2 6

JCR@2018

5 . 2 9 5

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:108

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 18

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 11

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