Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/167777 |
Resumo: | In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber. As the opening and closing of the valves are caused by the forces produced by the refrigerant flow, the understanding of the flow through the valve is of fundamental importance in order to enhance the efficiency of the valve system. The numerical simulation of the flow is an efficient method to perform this task. Due to the complex geometry usually found in this type of valve, simplified geometries have been used to represent the valve, particularly the radial diffuser. This work presents a numerical simulation of the unsteady flow through a more realistic geometric model for the suction valve including the movement of the reed. An Immersed Boundary Method (IBM) with the Multi-Direct Forcing Scheme is used to represent the valve geometry and to solve the 3D unsteady flow for an imposed angular movement to the reed. An adaptive mesh dynamically refined is used for representing the flow domain. The governing equations are solved by a projection method, using a semi-implicit second-order scheme for time integration. The systems of algebraic equations are solved by a Multigrid-Multilevel technique. Results for pressure and velocity fields and for pressure profiles on the reed surface were obtained for Reynolds number varying from 1, 000 to 8, 000. The results show that the IBM is a very good alternative for solving the flow through reed type valves with complex geometry. |
id |
UNSP_8f6517ae131ac288d12f738c9db0547c |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/167777 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valvesCompressorFluid-structure interactionImmersed boundary methodValveIn refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber. As the opening and closing of the valves are caused by the forces produced by the refrigerant flow, the understanding of the flow through the valve is of fundamental importance in order to enhance the efficiency of the valve system. The numerical simulation of the flow is an efficient method to perform this task. Due to the complex geometry usually found in this type of valve, simplified geometries have been used to represent the valve, particularly the radial diffuser. This work presents a numerical simulation of the unsteady flow through a more realistic geometric model for the suction valve including the movement of the reed. An Immersed Boundary Method (IBM) with the Multi-Direct Forcing Scheme is used to represent the valve geometry and to solve the 3D unsteady flow for an imposed angular movement to the reed. An adaptive mesh dynamically refined is used for representing the flow domain. The governing equations are solved by a projection method, using a semi-implicit second-order scheme for time integration. The systems of algebraic equations are solved by a Multigrid-Multilevel technique. Results for pressure and velocity fields and for pressure profiles on the reed surface were obtained for Reynolds number varying from 1, 000 to 8, 000. The results show that the IBM is a very good alternative for solving the flow through reed type valves with complex geometry.UNESP-Univ. Estadual Paulista, Department of Mechanical Engineering, Av. Brasil Centro 56UFU-Federal University of Uberlândia, Department of Mechanical Engineering, Campus Santa Mônica - Bloco M1UNESP-Univ. Estadual Paulista, Department of Mechanical Engineering, Av. Brasil Centro 56Universidade Estadual Paulista (Unesp)Universidade Federal de Uberlândia (UFU)Gasche, José L. [UNESP]Barbi, Franco2018-12-11T16:38:17Z2018-12-11T16:38:17Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject7053-706411th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014, p. 7053-7064.http://hdl.handle.net/11449/1677772-s2.0-84923972716Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014info:eu-repo/semantics/openAccess2021-10-23T21:44:37Zoai:repositorio.unesp.br:11449/167777Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:27:02.825914Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
title |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
spellingShingle |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves Gasche, José L. [UNESP] Compressor Fluid-structure interaction Immersed boundary method Valve |
title_short |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
title_full |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
title_fullStr |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
title_full_unstemmed |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
title_sort |
Evaluation of an Immersed Boundary Method for solving the fluid structure interaction problem in refrigeration compressor valves |
author |
Gasche, José L. [UNESP] |
author_facet |
Gasche, José L. [UNESP] Barbi, Franco |
author_role |
author |
author2 |
Barbi, Franco |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Uberlândia (UFU) |
dc.contributor.author.fl_str_mv |
Gasche, José L. [UNESP] Barbi, Franco |
dc.subject.por.fl_str_mv |
Compressor Fluid-structure interaction Immersed boundary method Valve |
topic |
Compressor Fluid-structure interaction Immersed boundary method Valve |
description |
In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber. As the opening and closing of the valves are caused by the forces produced by the refrigerant flow, the understanding of the flow through the valve is of fundamental importance in order to enhance the efficiency of the valve system. The numerical simulation of the flow is an efficient method to perform this task. Due to the complex geometry usually found in this type of valve, simplified geometries have been used to represent the valve, particularly the radial diffuser. This work presents a numerical simulation of the unsteady flow through a more realistic geometric model for the suction valve including the movement of the reed. An Immersed Boundary Method (IBM) with the Multi-Direct Forcing Scheme is used to represent the valve geometry and to solve the 3D unsteady flow for an imposed angular movement to the reed. An adaptive mesh dynamically refined is used for representing the flow domain. The governing equations are solved by a projection method, using a semi-implicit second-order scheme for time integration. The systems of algebraic equations are solved by a Multigrid-Multilevel technique. Results for pressure and velocity fields and for pressure profiles on the reed surface were obtained for Reynolds number varying from 1, 000 to 8, 000. The results show that the IBM is a very good alternative for solving the flow through reed type valves with complex geometry. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01 2018-12-11T16:38:17Z 2018-12-11T16:38:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014, p. 7053-7064. http://hdl.handle.net/11449/167777 2-s2.0-84923972716 |
identifier_str_mv |
11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014, p. 7053-7064. 2-s2.0-84923972716 |
url |
http://hdl.handle.net/11449/167777 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
7053-7064 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129203027050496 |