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Keywords: pressure drop
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Proceedings Papers

Proc. ASME. IMECE97, Advanced Energy Systems, 395-403, November 16–21, 1997
Paper No: IMECE1997-1012
...Abstract Abstract Experiments on flow condensation have been conducted with pure R32, R134a and R32/R134a mixtures. The results have been represented in form of local and mean heat transfer coefficient, as well as pressure drop. The heat transfer data is compared with the prediction from...
Proceedings Papers

Proc. ASME. IMECE2021, Volume 11: Heat Transfer and Thermal Engineering, V011T11A056, November 1–5, 2021
Paper No: IMECE2021-71372
... for the newly proposed mini-channel heat sink up to ~8% as compared to the conventional parallel flow mini-channel heat sink. Keywords: Mini-channel heat sink; heat transfer; hydraulic characteristics; rectangular fin with rounded ends; pressure drop NOMENCLATURE q" applied heat flux, W m 2 qeff effective heat...
Proceedings Papers

Proc. ASME. IMECE2013, Volume 8A: Heat Transfer and Thermal Engineering, V08AT09A032, November 15–21, 2013
Paper No: IMECE2013-63167
... Macroscopic modeling of hydrodynamic behavior of nanofluid flow in a uniformly heated circular pipe is considered. Single-phase models with Brownian and dispersion viscosity models are evaluated by comparing predicted pressure drop and apparent friction factor with experimental and two-phase...
Proceedings Papers

Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A005, November 15–21, 2013
Paper No: IMECE2013-66154
... that the maximal heat transfer rate and heat transfer effectiveness of the heat exchanger with Z-shaped fins reach 90.7 W and 61%, respectively. The temperature distribution of both fluid sides and solid body is predicted. Moreover, the pressure drop and the ratio of E/k are used to evaluate the general heat...
Proceedings Papers

Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A049, November 15–21, 2013
Paper No: IMECE2013-63348
... of Reynolds numbers from 5 to 2300. A simple empirical model is developed based on the experimental results to predict the pressure drop increase based on Dean number. The results and simple model are also compared to a well-known existing model for circular tubing. The coiled tube lengths used in this study...
Proceedings Papers

Proc. ASME. IMECE2013, Volume 4B: Dynamics, Vibration and Control, V04BT04A036, November 15–21, 2013
Paper No: IMECE2013-63242
..., pressure drop, numerical simulation Introduction Two-phase flow in pore structure is one of the most important topics, which is widely studied in petroleum, environmental and other research areas. Several studies have been conducted to simulate two-phase flow by applying numerical methods [1-10]. In 2002...
Proceedings Papers

Proc. ASME. IMECE2013, Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters), V015T16A017, November 15–21, 2013
Paper No: IMECE2013-67383
... Pressure drop calculation and temperature profiles associated with fuel and sheath are important aspects of a nuclear reactor design. The main objective of this paper is to determine the pressure drop in a fuel channel of a SuperCritical Water-cooled Reactor (SCWR) and to calculate...
Proceedings Papers

Proc. ASME. IMECE2012, Volume 4: Dynamics, Control and Uncertainty, Parts A and B, 1041-1046, November 9–15, 2012
Paper No: IMECE2012-87720
..., and the liquid film plays an important role in capillary flow. At the meantime, the pressure drop across the tube is recorded during the experiment, result shows that the pressure drop magnitude is proportional to the oil slug length, while it is not significantly affected by the liquid injecting velocity...
Proceedings Papers

Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 1411-1417, November 9–15, 2012
Paper No: IMECE2012-85920
... flow and heat transfer are investigated numerically. It is shown that for removing the identical load, the wavy microchannel has great potential to reduce pressure drop compared to the straight microchannel, especially for higher wave amplitude at the same Reynolds number, indicating the overall...
Proceedings Papers

Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 2509-2517, November 9–15, 2012
Paper No: IMECE2012-88577
... in a simulation. Instead, the entire bed mass present in an experiment is modeled, which assumes full fluidization. The paper will present modeling approaches that account for only the fluidizing mass by adjusting the initial mass present in the bed using pressure drop and minimum fluidization velocity from...
Proceedings Papers

Proc. ASME. IMECE2012, Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 2539-2546, November 9–15, 2012
Paper No: IMECE2012-89102
... Two factors of great importance when considering gas-solid fluidized bed dynamics are pressure drop and void fraction, which is the volume fraction of the gas phase. It is, of course, possible to obtain pressure drop and void fraction data through experimentation, but this tends to be costly...
Proceedings Papers

Proc. ASME. IMECE2011, Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B, 1437-1443, November 11–17, 2011
Paper No: IMECE2011-63461
... 02 08 2012 The main object of this work is to investigate combustion in a two-layer packed beds porous burner, in particular, to study the effect of methane and propane on flame stability, pressure drop and pollutant emissions. The equivalence ratio of both methane and propane varied...
Proceedings Papers

Proc. ASME. IMECE2011, Volume 10: Heat and Mass Transport Processes, Parts A and B, 251-255, November 11–17, 2011
Paper No: IMECE2011-65603
... 1 Copyright © 2011 by ASME Proceedings of the ASME International Mechanical Engineering Congress & Exposition IMECE2011 November 11-17, 2011, Denver, Colorado, USA IMECE2011-65603 NUMERICAL STUDY OF THE ENDWALL EFFECTS ON WATER SINGLE-PHASE PRESSURE DROP ACROSS A CIRCULAR MICRO-PIN-FIN ARRAY...
Proceedings Papers

Proc. ASME. IMECE2011, Volume 10: Heat and Mass Transport Processes, Parts A and B, 153-158, November 11–17, 2011
Paper No: IMECE2011-64440
...) and frictional (f) factor. The result for the fin showed a deviation close to 3% when compared to experimental data for similar geometries from Keys & London. The results show how the turbulence highly increases the heat transfer phenomena. KEYWORDS Plane fins; Louvered fins; Heat transfer; Pressure drop...
Proceedings Papers

Proc. ASME. IMECE2010, Volume 10: Micro and Nano Systems, 659-665, November 12–18, 2010
Paper No: IMECE2010-40470
... ranging from 200 to 465 μm and channel Reynolds numbers up to 7000. The geometric parameters of these micro orifices were determined to have a measurable pressure drop and to avoid choking. The calculation of the pressure drop through a micro orifice are represented using analytical equations, and modeled...
Proceedings Papers

Proc. ASME. IMECE2010, Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 1255-1264, November 12–18, 2010
Paper No: IMECE2010-37420
...-state and time-dependent conditions is carried out. The solver COMSOL was developed by COMSOL Multiphysics, Inc. using the finite element method. The pressure drop and heat transfer are two of the most important parameters in these devices. In this study, the results obtained from the numerical...
Proceedings Papers

Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 741-748, November 13–19, 2009
Paper No: IMECE2009-11875
... elements, respectively. Shape factor and peak position have been used to analyze the influence of roughness elements on centerline velocity distribution, pressure drop and Nusselt number. It is found that the shape factor has a significant effect on the centerline velocity distribution, pressure drop...
Proceedings Papers

Proc. ASME. IMECE2009, Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C, 1167-1172, November 13–19, 2009
Paper No: IMECE2009-12367
... in porous media flow case at the expense of a reasonable pressure drop. Based on the experimental data new empirical correlations for both Nusselt number and friction factor have also been developed for such air duct, which gives a good agreement between predicted values and experimental values of Nusselt...
Proceedings Papers

Proc. ASME. IMECE2002, Heat Transfer, Volume 4, 201-210, November 17–22, 2002
Paper No: IMECE2002-39194
... 23 05 2008 This paper reports the development of an experimentally validated model for pressure drop during intermittent flow of condensing refrigerant R134a in horizontal, noncircular microchannels. Two-phase pressure drops were measured in six noncircular channels ranging...
Proceedings Papers

Proc. ASME. IMECE2002, Process Industries, 29-35, November 17–22, 2002
Paper No: IMECE2002-39651
... enhancement and increased pressure drop penalty. The origin of the work stems from rotary regenerative heat exchangers. The present paper focuses on this matter and numerical results (based on CFD) as well as preliminary experimental heat transfer data (overall), available mass transfer results are used...