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94 51 1 1400 153 - 162 $%&’ - 10.22034/jmeut.2021.10871 DOI: * : [email protected] : ! 02 / 05 / 97 :() ! 09 / 04 / 99 ( )* +(, & -. /01 23 +(, 45% 6 5 74( 7(,3 0 1 8 9-4 : 7;< * + + ,- . /+ 01 23 45 6 7 45 >1< 24 (4 45 45 6 23 01 /+ . ,- + 8+ 7 ? 9 : ., <= , 6 , >- 2? @AB 5 9 0C ,6 9 ? : .D 2 5 -B =, E? B 6 9BB , F? GHI JK 2? L 5 IM 6 25, : 9 : B =, 5 N G Anysys CFX N8 : , . E? - ,6 OFP 9 9 : 2B J6 QD R6 2 SB + 9 9 >, , IM 2?G N O,B Aspen HTRI ROK 2G N 2? Ansys CFX ,B . @8, K1 IM T1 : B ( N8 : . B 4 ,K =, B , B U ?/+5 5 ,? 2 B+ H : . LV, U R1I 5 N G IM B ( . TS, ,K RW N: P B 6 8, X : . U 7+ IM T1 : 2B + RWI 50 O B B BD 9Y EZD 2 5 2B 2?5: [ 650 3 , B , J6 0W 4 : N5S 9Y . U ROK 2? N8 6 2 3D 4, N: 5 9 50 3 O, 7+ . ZP B 9 7G + F, L 5 P 5 3 ): KB 9 I 2 >, .G B 5 % + 2 9 B , . @4& 7% 73 : 6 5, <= 9 : . TS, ,K HTRI Aspen ANSYS . Thermal and fluid flow analysis for air-cooled heat exchanger in high altitude engine test facility Faculty of Mechanical Engineering, Jondi Shapour University, Dezful, Iran M. R. Assari Faculty of Mechanical Engineering, Jondi Shapour University, Dezful, Iran A. Ebn Abbas Abstract The heat exchanger is one of the most important parts of the Altitude Engine Test Facility. In this regard, it is necessary to identify the Air-Cooled heat exchanger to optimally use the ambient temperature conditions. In this study, after designing, thermal heat exchanger simulation was performed. The ultimate goal is to identify the performance of this heat exchanger for the specific conditions of high temperature and low pressure of this system based on the sizes provided by the design software Aspen and HTRI and simulation results of ANSYS CFX. The design accuracy of this study was carried out in two ways. At first, the validity of the computational model was confirmed by reference to experimental results from a similar geometry. Then, the results of two designing software were compared with the computational fluid dynamics method which validated in the previous step. The results showed that the design was suitable and can provide the required heat transfer for the most critical current flow of high temperature gases in 650 °C and 50 mbar pressure which was based on actual conditions. The results of the study confirmed the temperature of 50 °C at the output of the designed heat exchanger. In addition, the pressure drop for hot gases on the pipe side after passing through 3 passes in critical operating condition was found to be close to 5% of inlet pressure. Keywords: AETF, HTRI, Aspen, ANSYS, CFD, Air-Cooled Heat Exchanger. 1 - B , 6 5, <= . _ 5 TG-8 =OA 6B 2 3D a=K @5 W . 9 TG-8 .? =b 2 4 73 B -P C6 D JK @5 >? 6 . ] 1 [ 2B H -B 6 OFP 9 , 2G3 dOA 7 B , F6 2): R6 1 e+ : . C 1 - D+ 0 74 84 E4F- G)H 1 8 9-4 ] 2 [

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Thermal and fluid flow analysis for air-cooled heat exchanger in high altitude engine test facility

Faculty of Mechanical Engineering, Jondi Shapour University, Dezful, Iran M. R. Assari Faculty of Mechanical Engineering, Jondi Shapour University, Dezful, Iran A. Ebn Abbas

Abstract The heat exchanger is one of the most important parts of the Altitude Engine Test Facility. In this regard, it is necessary to identify the Air-Cooled heat exchanger to optimally use the ambient temperature conditions. In this study, after designing, thermal heat exchanger simulation was performed. The ultimate goal is to identify the performance of this heat exchanger for the specific conditions of high temperature and low pressure of this system based on the sizes provided by the design software Aspen and HTRI and simulation results of ANSYS CFX. The design accuracy of this study was carried out in two ways. At first, the validity of the computational model was confirmed by reference to experimental results from a similar geometry. Then, the results of two designing software were compared with the computational fluid dynamics method which validated in the previous step. The results showed that the design was suitable and can provide the required heat transfer for the most critical current flow of high temperature gases in 650 °C and 50 mbar pressure which was based on actual conditions. The results of the study confirmed the temperature of 50 °C at the output of the designed heat exchanger. In addition, the pressure drop for hot gases on the pipe side after passing through 3 passes in critical operating condition was found to be close to 5% of inlet pressure. Keywords: AETF, HTRI, Aspen, ANSYS, CFD, Air-Cooled Heat Exchanger.

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