... supercritical CO 2 as a working fluid for energy systems is demonstrated. supercritical CO 2 shell-and-tube heat exchanger thermohydraulic performance model volume averaging theory Advanced Research Projects Agency - Energy 10.13039/100006133 DE-AR0001131 Heat exchangers are devices...

... thermal-fluid-solid modeling based on volume averaging theory (VAT) has allowed for significant strides in this effort. A number of optimization methods for heat sink designers who model heat sinks with VAT can be envisioned due to VAT's singular ability to rapidly provide solutions, when compared...

.... Assoc. Editor: Giulio Lorenzini. 22 07 2012 18 03 2013 This paper proposes and implements a new methodology for optimizing finned-tube heat exchangers (FTHEs) using a volume-averaging theory (VAT) hierarchical physical model and a genetic algorithm (GA) numerical optimizer...

... length scale based on volume averaging theory (VAT) to define the Reynolds number, Nusselt number, and friction factor. It is found that heat transfer performance is most favorable when the elliptic scales are oriented with their long axis perpendicular to the flow direction, while the scales elongated...

... Modelling for Heat and Fluid Flow in a Porous Medium ,” J. Fluid Mech. , 563 ( 1 ), pp. 81 – 96 . 10.1017/S0022112006001078 [24] Travkin , V. S. , and Catton , I. , 2001 , “ Transport Phenomena in Heterogeneous Media Based on Volume Averaging Theory ,” Advances in Heat Transfer , G. G...

... rate via induction heating. The fluid temperature response is measured. The internal heat transfer coefficient is determined by comparing the results of a numerical simulation based on volume averaging theory (VAT) with the experimental results. The only information needed is the basic material...

...Feng Zhou; Nicholas E. Hansen; David J. Geb; Ivan Catton Modeling of fin-and-tube heat exchangers based on the volume averaging theory (VAT) requires proper closure of the VAT based governing equations. Closure can be obtained from reasonable lower scale solutions of a computational fluid dynamics...

...Feng Zhou; Nicholas E. Hansen; David J. Geb; Ivan Catton Modeling a fin-and-tube heat exchanger as porous media based on volume averaging theory (VAT), specific geometry can be accounted for in such a way that the details of the original structure can be replaced by their averaged counterparts...

... algorithms heat exchangers heat transfer microchannel flow turbulence volume averaging theory conjugate heat transfer heat exchanger heat sink design Many heat transfer devices can be called heterogeneous and hierarchical. We treat such problems everyday by assigning a heat transfer...