Transient Heat Exchanger Response With Pressure Regulated Outflow

Regulagadda, P.; Naterer, G.F.; Dinçer, İbrahim

doi:10.1115/1.4004009

Cited by 4 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reo 4r»w/G nDmsfi (9 ) Here, y u is the dynamic viscosity of the fluid. The Reynolds num ber indicates if the flow is laminar or turbulent.…”

Section: Transient Heat Transfer Analysismentioning

confidence: 99%

“…The temperature distributions within the stainless steel wall and air are approximated by [6,7,9] T* = T* …”

Section: Transient Heat Transfer Analysismentioning

confidence: 99%

“…One fluid had a constant temperature and the other fluid stayed in a single phase. The energy equa tion was directly solved for both sides of the heat exchanger with an integral method [8], Regulagadda et al [9] analyzed the transient response in a heat exchanger with pressure regulated outflow. Naterer and Lam [7] developed an analytical method to model the transient response of a two-phase heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Transient Temperature Response of Variable Flow Heat Exchangers in a Marnoch Heat Engine

Saneipoor

Naterer

Dinçer

2014

Journal of Heat Transfer

Self Cite

View full text Add to dashboard Cite

T ran sien t T e m p eratu re R esponse of V a ria b le Flow H eat Exchangers in a M arnoch H eat EngineWithin a Marnoch heat engine (MHE), a water!glycol mixture transfers heat from the heat source into a set o f variable flow heat exchangers and removes heat from adjoining cold heat exchangers. The compressed dry air is used as the working medium in this heat engine. The MHE has four shell and tube heat exchangers, which operate transient and variable flow conditions. A new transient heat transfer model is developed to predict this transient behavior o f the heat exchangers fo r different flow regimes and temperatures. The results from the model are validated against experimental results from an MHE pro totype. The heat transfer model shows 85% agreement with measured data from the MHE prototype fo r the individual heat exchangers. This model can be used fo r similar shell and tube heat exchangers with straight or U-shaped tubes. The heat transfer model pre dicts the gas temperature on the shell side, when a step change is imposed on the liquid entering the tubes. System DescriptionThe MHE is a recently developed new type of heat engine that creates mechanical work from temperature differences. The pres ent prototype of the MHE is composed of four shell and tube heat Journal of Heat Transfer

show abstract

“…Reo 4r»w/G nDmsfi (9 ) Here, y u is the dynamic viscosity of the fluid. The Reynolds num ber indicates if the flow is laminar or turbulent.…”

Section: Transient Heat Transfer Analysismentioning

confidence: 99%

“…The temperature distributions within the stainless steel wall and air are approximated by [6,7,9] T* = T* …”

Section: Transient Heat Transfer Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transient Temperature Response of Variable Flow Heat Exchangers in a Marnoch Heat Engine

Saneipoor

Naterer

Dinçer

2014

Journal of Heat Transfer

Self Cite

View full text Add to dashboard Cite

show abstract

Thermodynamic analysis of a new Marnoch Heat Engine

Saneipoor

Dinçer

Naterer

2013

Applied Thermal Engineering

View full text Add to dashboard Cite

A simple and efficient outflow boundary condition for the incompressible Navier–Stokes equations

Choi

Choic³

et al. 2016

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

Many researchers have proposed special treatments for outlet boundary conditions owing to lack of information at the outlet. Among them, the simplest method requires a large enough computational domain to prevent or reduce numerical errors at the boundaries. However, an efficient method generally requires special treatment to overcome the problems raised by the outlet boundary condition used. For example, mass flux is not conserved and the fluid field is not divergence-free at the outlet boundary. Overcoming these problems requires additional computational cost. In this paper, we present a simple and efficient outflow boundary condition for the incompressible Navier-Stokes equations, aiming to reduce the computational domain for simulating flow inside a long channel in the streamwise direction. The proposed outflow boundary condition is based on the transparent equation, where a weak formulation is used. The pressure boundary condition is derived by using the Navier-Stokes equations and the outlet flow boundary condition. In the numerical algorithm, a staggered marker-and-cell grid is used and temporal discretization is based on a projection method. The intermediate velocity boundary condition is consistently adopted to handle the velocity-pressure coupling. Characteristic numerical experiments are presented to demonstrate the robustness and accuracy of the proposed numerical scheme. Furthermore, the agreement of computational results from small and large domains suggests that our proposed outflow boundary condition can significantly reduce computational domain sizes. ARTICLE HISTORY

show abstract

Transient Heat Exchanger Response With Pressure Regulated Outflow

Cited by 4 publications

References 15 publications

Transient Temperature Response of Variable Flow Heat Exchangers in a Marnoch Heat Engine

Transient Temperature Response of Variable Flow Heat Exchangers in a Marnoch Heat Engine

Thermodynamic analysis of a new Marnoch Heat Engine

A simple and efficient outflow boundary condition for the incompressible Navier–Stokes equations

Contact Info

Product

Resources

About