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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...
Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A005, November 15–21, 2013
Paper No: IMECE2013-66154
... body is predicted. Moreover, the pressure drop and the ratio of E/k are used to evaluate the general heat exchanger performance. The ratio of E/k is smaller than unit of ten at the low Reynolds number and increases greatly at high Reynolds number. [Keywords: ceramic heat exchanger; micro-channel; fin...
Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A049, November 15–21, 2013
Paper No: IMECE2013-63348
... 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...
Proc. ASME. IMECE2013, Volume 4B: Dynamics, Vibration and Control, V04BT04A036, November 15–21, 2013
Paper No: IMECE2013-63242
... well in simulating oil slug shape variation; meanwhile, the maximum driven pressure magnitude is proportional to the water injection rate and the oil slug length, and the flow time is inversely proportional to the water injection rate. two-phase flow flow phenomena pressure drop numerical...
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 the...
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
... Eulerian-Eulerian model dead-zones adjusted mass binary mixture pressure drop The hydrodynamics of fluidized beds involving gas and particle interactions are very complex and must be carefully considered when using computational fluid dynamics (CFD). Modeling particle interactions are...
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
... Eulerian-Eulerian modeling fluidization pressure drop 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...
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...
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
..., 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 thermal performance of the wavy microchannel is superior to the traditional straight rectangular...
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
... two-layer packed beds flame stability pressure drop emissions 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...
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...
Proc. ASME. IMECE2011, Volume 10: Heat and Mass Transport Processes, Parts A and B, 153-158, November 11–17, 2011
Paper No: IMECE2011-64440
... 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; Colburn factor; Friction...
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...
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
... Micro heat exchanger heat transfer incompressible Navier-Stokes temperature profile pressure drop Microchannel heat exchangers are employed for thermal management of electronic devices, IC circuits, etc. Simulation of microchannel heat exchangers using solver with the capability of...
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
... 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...
Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 741-748, November 13–19, 2009
Paper No: IMECE2009-11875
... 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 and Nusselt number. It is also found that, for a given shape factor, the effect of peak position on pressure drop is strongly...
Proc. ASME. IMECE2002, Process Industries, 29-35, November 17–22, 2002
Paper No: IMECE2002-39651
... pumping enhancem velocity (a same or ev corrugation wavelength and corrugation height are the same throughout the whole duct length. Previous investigations [5-7] Proceedings of IMECE200 M N1 Copyright © 2002 by ASME : enhancement, corrugated duct, partial corrugation, transfer coefficient, pressure drop...
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 in...
Proc. ASME. IMECE2004, Heat Transfer, Volume 2, 57-65, November 13–19, 2004
Paper No: IMECE2004-60824
... across a finned-tube compact heat changer with continuous plate-fins. A modified Wilson plot hnique is applied to determine correlations for heat transfer both glycol-water mixture and air sides. The frictional ssure drop on the glycol-side is calculated from the total asured pressure drop and adjusted...
Proc. ASME. IMECE2004, Electronic and Photonic Packaging, Electrical Systems Design and Photonics, and Nanotechnology, 23-28, November 13–19, 2004
Paper No: IMECE2004-59811
... electronics cooling. A number ytical methods are available in literature to predict plate fin heat ermal performance and pressure drop. Teertstra et al.  ed a composite model by combining the fully-developed and ing flow to predict the thermal performance. A heat transfer ent was performed to validate this...