CFD analysis for solar chimney power plants

Hermann F Fasel, Fanlong Meng, Ehsan Shams, Andreas Gross

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Solar chimney power plants are investigated numerically using ANSYS Fluent and an in-house developed Computational Fluid Dynamics (CFD) code. Analytical scaling laws are verified by considering a large range of scales with tower heights between 1. m (sub-scale laboratory model) and 1000. m (largest envisioned plant). A model with approximately 6. m tower height is currently under construction at the University of Arizona. Detailed time-dependent high-resolution simulations of the flow in the collector and chimney of the model provide detailed insight into the fluid dynamics and heat transfer mechanisms. Both transversal and longitudinal convection rolls are identified in the collector, indicating the presence of a Rayleigh-Bénard-Poiseuille instability. Local separation is observed near the chimney inflow. The flow inside the chimney is fully turbulent.

Original languageEnglish (US)
Pages (from-to)12-22
Number of pages11
JournalSolar Energy
Volume98
DOIs
StatePublished - Dec 2013

Fingerprint

Solar chimneys
Chimneys
Dynamic analysis
Power plants
Computational fluid dynamics
Towers
Scaling laws
Fluid dynamics
Heat transfer

Keywords

  • CFD
  • Direct numerical simulation
  • Rayleigh-Bénard-Poiseuille instability
  • Solar chimney
  • Turbulence modeling
  • Unsteady flow structures

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

CFD analysis for solar chimney power plants. / Fasel, Hermann F; Meng, Fanlong; Shams, Ehsan; Gross, Andreas.

In: Solar Energy, Vol. 98, 12.2013, p. 12-22.

Research output: Contribution to journalArticle

Fasel, Hermann F ; Meng, Fanlong ; Shams, Ehsan ; Gross, Andreas. / CFD analysis for solar chimney power plants. In: Solar Energy. 2013 ; Vol. 98. pp. 12-22.
@article{e94e32eafd7f470caf7df0b072a3929b,
title = "CFD analysis for solar chimney power plants",
abstract = "Solar chimney power plants are investigated numerically using ANSYS Fluent and an in-house developed Computational Fluid Dynamics (CFD) code. Analytical scaling laws are verified by considering a large range of scales with tower heights between 1. m (sub-scale laboratory model) and 1000. m (largest envisioned plant). A model with approximately 6. m tower height is currently under construction at the University of Arizona. Detailed time-dependent high-resolution simulations of the flow in the collector and chimney of the model provide detailed insight into the fluid dynamics and heat transfer mechanisms. Both transversal and longitudinal convection rolls are identified in the collector, indicating the presence of a Rayleigh-B{\'e}nard-Poiseuille instability. Local separation is observed near the chimney inflow. The flow inside the chimney is fully turbulent.",
keywords = "CFD, Direct numerical simulation, Rayleigh-B{\'e}nard-Poiseuille instability, Solar chimney, Turbulence modeling, Unsteady flow structures",
author = "Fasel, {Hermann F} and Fanlong Meng and Ehsan Shams and Andreas Gross",
year = "2013",
month = "12",
doi = "10.1016/j.solener.2013.08.029",
language = "English (US)",
volume = "98",
pages = "12--22",
journal = "Solar Energy",
issn = "0038-092X",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - CFD analysis for solar chimney power plants

AU - Fasel, Hermann F

AU - Meng, Fanlong

AU - Shams, Ehsan

AU - Gross, Andreas

PY - 2013/12

Y1 - 2013/12

N2 - Solar chimney power plants are investigated numerically using ANSYS Fluent and an in-house developed Computational Fluid Dynamics (CFD) code. Analytical scaling laws are verified by considering a large range of scales with tower heights between 1. m (sub-scale laboratory model) and 1000. m (largest envisioned plant). A model with approximately 6. m tower height is currently under construction at the University of Arizona. Detailed time-dependent high-resolution simulations of the flow in the collector and chimney of the model provide detailed insight into the fluid dynamics and heat transfer mechanisms. Both transversal and longitudinal convection rolls are identified in the collector, indicating the presence of a Rayleigh-Bénard-Poiseuille instability. Local separation is observed near the chimney inflow. The flow inside the chimney is fully turbulent.

AB - Solar chimney power plants are investigated numerically using ANSYS Fluent and an in-house developed Computational Fluid Dynamics (CFD) code. Analytical scaling laws are verified by considering a large range of scales with tower heights between 1. m (sub-scale laboratory model) and 1000. m (largest envisioned plant). A model with approximately 6. m tower height is currently under construction at the University of Arizona. Detailed time-dependent high-resolution simulations of the flow in the collector and chimney of the model provide detailed insight into the fluid dynamics and heat transfer mechanisms. Both transversal and longitudinal convection rolls are identified in the collector, indicating the presence of a Rayleigh-Bénard-Poiseuille instability. Local separation is observed near the chimney inflow. The flow inside the chimney is fully turbulent.

KW - CFD

KW - Direct numerical simulation

KW - Rayleigh-Bénard-Poiseuille instability

KW - Solar chimney

KW - Turbulence modeling

KW - Unsteady flow structures

UR - http://www.scopus.com/inward/record.url?scp=84887018935&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887018935&partnerID=8YFLogxK

U2 - 10.1016/j.solener.2013.08.029

DO - 10.1016/j.solener.2013.08.029

M3 - Article

AN - SCOPUS:84887018935

VL - 98

SP - 12

EP - 22

JO - Solar Energy

JF - Solar Energy

SN - 0038-092X

ER -