Wall shape optimization for a thermosyphon loop featuring corrugated pipes

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In the present paper we address the problem of optimal wall-shape design of a single phase laminar thermosyphon loop. The model takes the buoyancy forces into account via the Boussinesq approximation. We focus our study on showing the effects of wall shape on the flow and on the temperature inside the thermosyphon. To this extend we determine the dependency of the flow rate and the increase in temperature, on the geometrical characteristics of the loop. The geometry considered is a set of axially symmetric corrugated pipes described by a set of parameters; namely the pipe inner radius, the period of the corrugation, the amplitude of the corrugation, and the ratio of expansion and contraction regions of a period of the pipe. The governing equations are solved using the Finite Element Method, in combination with an adaptive mesh refinement technique in order to capture the effects of wall shape. We characterize the effects of the amplitude and of the ratio of expansion and contraction. In particular we show that for a given fixed amplitude it is possible to find an optimal ratio of expansion and contraction that minimizes the temperature inside the thermosyphon. The results show that by adequately choosing the design parameters, the performance of the thermosyphon loop can be improved.
Originele taal-2Engels
TitelProceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011)
RedacteurenJ.G. Weisend II
Pagina's724-731
DOI's
StatusGepubliceerd - 2012

Publicatie series

NaamAIP Conference Proceedings
Volume1434
ISSN van geprinte versie0094-243X

Vingerafdruk

Thermosyphons
Shape optimization
Pipe
Buoyancy
Temperature
Flow rate
Finite element method
Geometry

Citeer dit

Rosen Esquivel, P. I., Thije Boonkkamp, ten, J. H. M., Dam, J. A. M., & Mattheij, R. M. M. (2012). Wall shape optimization for a thermosyphon loop featuring corrugated pipes. In J. G. Weisend II (editor), Proceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011) (blz. 724-731). (AIP Conference Proceedings; Vol. 1434). https://doi.org/10.1063/1.4706984
Rosen Esquivel, P.I. ; Thije Boonkkamp, ten, J.H.M. ; Dam, J.A.M. ; Mattheij, R.M.M. / Wall shape optimization for a thermosyphon loop featuring corrugated pipes. Proceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011). redacteur / J.G. Weisend II. 2012. blz. 724-731 (AIP Conference Proceedings).
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title = "Wall shape optimization for a thermosyphon loop featuring corrugated pipes",
abstract = "In the present paper we address the problem of optimal wall-shape design of a single phase laminar thermosyphon loop. The model takes the buoyancy forces into account via the Boussinesq approximation. We focus our study on showing the effects of wall shape on the flow and on the temperature inside the thermosyphon. To this extend we determine the dependency of the flow rate and the increase in temperature, on the geometrical characteristics of the loop. The geometry considered is a set of axially symmetric corrugated pipes described by a set of parameters; namely the pipe inner radius, the period of the corrugation, the amplitude of the corrugation, and the ratio of expansion and contraction regions of a period of the pipe. The governing equations are solved using the Finite Element Method, in combination with an adaptive mesh refinement technique in order to capture the effects of wall shape. We characterize the effects of the amplitude and of the ratio of expansion and contraction. In particular we show that for a given fixed amplitude it is possible to find an optimal ratio of expansion and contraction that minimizes the temperature inside the thermosyphon. The results show that by adequately choosing the design parameters, the performance of the thermosyphon loop can be improved.",
author = "{Rosen Esquivel}, P.I. and {Thije Boonkkamp, ten}, J.H.M. and J.A.M. Dam and R.M.M. Mattheij",
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Rosen Esquivel, PI, Thije Boonkkamp, ten, JHM, Dam, JAM & Mattheij, RMM 2012, Wall shape optimization for a thermosyphon loop featuring corrugated pipes. in JG Weisend II (redactie), Proceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011). AIP Conference Proceedings, vol. 1434, blz. 724-731. https://doi.org/10.1063/1.4706984

Wall shape optimization for a thermosyphon loop featuring corrugated pipes. / Rosen Esquivel, P.I.; Thije Boonkkamp, ten, J.H.M.; Dam, J.A.M.; Mattheij, R.M.M.

Proceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011). redactie / J.G. Weisend II. 2012. blz. 724-731 (AIP Conference Proceedings; Vol. 1434).

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

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N2 - In the present paper we address the problem of optimal wall-shape design of a single phase laminar thermosyphon loop. The model takes the buoyancy forces into account via the Boussinesq approximation. We focus our study on showing the effects of wall shape on the flow and on the temperature inside the thermosyphon. To this extend we determine the dependency of the flow rate and the increase in temperature, on the geometrical characteristics of the loop. The geometry considered is a set of axially symmetric corrugated pipes described by a set of parameters; namely the pipe inner radius, the period of the corrugation, the amplitude of the corrugation, and the ratio of expansion and contraction regions of a period of the pipe. The governing equations are solved using the Finite Element Method, in combination with an adaptive mesh refinement technique in order to capture the effects of wall shape. We characterize the effects of the amplitude and of the ratio of expansion and contraction. In particular we show that for a given fixed amplitude it is possible to find an optimal ratio of expansion and contraction that minimizes the temperature inside the thermosyphon. The results show that by adequately choosing the design parameters, the performance of the thermosyphon loop can be improved.

AB - In the present paper we address the problem of optimal wall-shape design of a single phase laminar thermosyphon loop. The model takes the buoyancy forces into account via the Boussinesq approximation. We focus our study on showing the effects of wall shape on the flow and on the temperature inside the thermosyphon. To this extend we determine the dependency of the flow rate and the increase in temperature, on the geometrical characteristics of the loop. The geometry considered is a set of axially symmetric corrugated pipes described by a set of parameters; namely the pipe inner radius, the period of the corrugation, the amplitude of the corrugation, and the ratio of expansion and contraction regions of a period of the pipe. The governing equations are solved using the Finite Element Method, in combination with an adaptive mesh refinement technique in order to capture the effects of wall shape. We characterize the effects of the amplitude and of the ratio of expansion and contraction. In particular we show that for a given fixed amplitude it is possible to find an optimal ratio of expansion and contraction that minimizes the temperature inside the thermosyphon. The results show that by adequately choosing the design parameters, the performance of the thermosyphon loop can be improved.

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Rosen Esquivel PI, Thije Boonkkamp, ten JHM, Dam JAM, Mattheij RMM. Wall shape optimization for a thermosyphon loop featuring corrugated pipes. In Weisend II JG, redacteur, Proceedings of the 2011 Cryogenic Engineering Conference & International Cryogenic Materials Conference (CEC-ICMC 2011, Spokane WA, USA, June 13-17, 2011). 2012. blz. 724-731. (AIP Conference Proceedings). https://doi.org/10.1063/1.4706984