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Title: Pairing Directional Solar Inputs From Ray Tracing to Solar Receiver/Reactor Heat Transfer Models on Unstructured Meshes: Development and Case Studies

Abstract

A novel method for pairing surface irradiation and volumetric absorption from Monte Carlo ray tracing to computational heat transfer models is presented. The method is well-suited to directionally and spatially complex concentrated radiative inputs (e.g., solar receivers and reactors). The method employs a generalized algorithm for directly mapping absorbed rays from a Monte Carlo ray tracing model to boundary or volumetric source terms in the computational mesh. The algorithm is compatible with unstructured, two and three-dimensional meshes with varying element shapes. Four case studies were performed on a directly irradiated, windowed solar thermochemical reactor model to validate the method. The method was shown to conserve energy and preserve spatial variation when mapping rays from a Monte Carlo ray tracing model to a computational heat transfer model in ansys fluent.

Authors:
 [1];  [1];  [1]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1670763
Report Number(s):
SAND2020-7653J
Journal ID: ISSN 0199-6231; 687627
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Solar Energy Engineering
Additional Journal Information:
Journal Volume: 143; Journal Issue: 3; Journal ID: ISSN 0199-6231
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Bush, H. Evan, Schrader, Andrew J., and Loutzenhiser, Peter G. Pairing Directional Solar Inputs From Ray Tracing to Solar Receiver/Reactor Heat Transfer Models on Unstructured Meshes: Development and Case Studies. United States: N. p., 2020. Web. doi:10.1115/1.4048563.
Bush, H. Evan, Schrader, Andrew J., & Loutzenhiser, Peter G. Pairing Directional Solar Inputs From Ray Tracing to Solar Receiver/Reactor Heat Transfer Models on Unstructured Meshes: Development and Case Studies. United States. doi:10.1115/1.4048563.
Bush, H. Evan, Schrader, Andrew J., and Loutzenhiser, Peter G. Tue . "Pairing Directional Solar Inputs From Ray Tracing to Solar Receiver/Reactor Heat Transfer Models on Unstructured Meshes: Development and Case Studies". United States. doi:10.1115/1.4048563.
@article{osti_1670763,
title = {Pairing Directional Solar Inputs From Ray Tracing to Solar Receiver/Reactor Heat Transfer Models on Unstructured Meshes: Development and Case Studies},
author = {Bush, H. Evan and Schrader, Andrew J. and Loutzenhiser, Peter G.},
abstractNote = {A novel method for pairing surface irradiation and volumetric absorption from Monte Carlo ray tracing to computational heat transfer models is presented. The method is well-suited to directionally and spatially complex concentrated radiative inputs (e.g., solar receivers and reactors). The method employs a generalized algorithm for directly mapping absorbed rays from a Monte Carlo ray tracing model to boundary or volumetric source terms in the computational mesh. The algorithm is compatible with unstructured, two and three-dimensional meshes with varying element shapes. Four case studies were performed on a directly irradiated, windowed solar thermochemical reactor model to validate the method. The method was shown to conserve energy and preserve spatial variation when mapping rays from a Monte Carlo ray tracing model to a computational heat transfer model in ansys fluent.},
doi = {10.1115/1.4048563},
journal = {Journal of Solar Energy Engineering},
number = 3,
volume = 143,
place = {United States},
year = {2020},
month = {10}
}

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