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<p>A three-dimensional conjugate heat transfer model including porous discs of varying pore diameters arranged axially inside a parabolic trough receiver to evaluate the performance of a PTC (parabolic trough collector) receiver equipped with a novel porous disc insert having unequal pores. The SST (Shear Stress Transport) turbulence model with coupled wall functions was used to simulate turbulent flow characteristics. The impacts of porosity, shape, hole orientation, and insert spacing on thermal and hydraulic performance were analyzed in five phases. Results reveal that disc geometry, pore orientation, and axial spacing are essential design characteristics that determine thermal improvements vs. pressure drop in a parabolic trough receiver. These parameters are necessary for the design of the receiver. Maximum Thermal Enhancement Index improvements are configuration-specific and may reach up to 13% above the reference guiding optimum porus insert design for increased thermo hydraulic performance. These enhancements can further improve thermo hydraulic performance. The outcomes of the investigation revealed that the optimized porous disc insert sought to significantly improve the thermal performance of PTC receivers.</p>

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CFD analysis of thermo-hydraulic performance in parabolic trough receiver with porous inserts

  • 期刊论文

  • 发表日期：

    2026年5月27日

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  • Thillikkani Shanmugam,
  • Senthil Chandran,
  • King M. Francis Luther,
  • Karthick Kumar Thangavel

摘要

A three-dimensional conjugate heat transfer model including porous discs of varying pore diameters arranged axially inside a parabolic trough receiver to evaluate the performance of a PTC (parabolic trough collector) receiver equipped with a novel porous disc insert having unequal pores. The SST (Shear Stress Transport) turbulence model with coupled wall functions was used to simulate turbulent flow characteristics. The impacts of porosity, shape, hole orientation, and insert spacing on thermal and hydraulic performance were analyzed in five phases. Results reveal that disc geometry, pore orientation, and axial spacing are essential design characteristics that determine thermal improvements vs. pressure drop in a parabolic trough receiver. These parameters are necessary for the design of the receiver. Maximum Thermal Enhancement Index improvements are configuration-specific and may reach up to 13% above the reference guiding optimum porus insert design for increased thermo hydraulic performance. These enhancements can further improve thermo hydraulic performance. The outcomes of the investigation revealed that the optimized porous disc insert sought to significantly improve the thermal performance of PTC receivers.