... enhancement ofheattransfer heated surface to the working fluid. In the present work experimental investigations has been carried out to study the effect of a gap in the inclined rib on the heattransfer ... Associate Professor in the Department of Mechanical Engineering atM.A.N.I.T. Bhopal (M.P.) INDIA. He received Ph D degree from IIT Roorkee , INDIA. He is working in the area ofheattransfer and ... the heated wall in transverse, inclined, V-continuous and V- discrete pattern. Int. Journal ofHeat Mass Transfer 2003; 30(2): 241-250. [17] Bhagoria J.L. and Sahu M.M. Augmentation ofheat transfer...
... L. Tien, HeatTransfer Mechanisms during Short-Pulse Laser Heating of Metals, ASME J. Heat Transfer, vol. 115, pp. 835–841, 1993.5. T. Q. Qiu and C. L. Tien, Femtosecond Laser Heating of Multi-Layer ... amount of superheating andthat a distinct melt phase develops with duration of the order of nanoseconds.INTRODUCTION In the last few years, the use of femtosecond lasers in materials processing ... LaserHeating, Int. J. Heat Mass Transfer, vol. 44, pp. 1725–1734, 2001.10. L S. Kuo and T. Q. Qiu, Microscale Energy Transfer during Picosecond Laser Melting of Metal Films, Proc. 31st Natl. Heat...
... maintain the rotation of the cylinder at a constant angular velocity W in infinite fluid, it is necessary to apply the following time-dependent angular momentum per unit length of the cylinder: ... contain tables with exact solutions of the heat equation. In addition, the equation of convective diffusion, the continuity equation, equations of motion in some curvilinear orthogonal coordinate ... straining flow: This flow can be obtained in the Taylor device, consisting of four rotating cylinders [474,475]. Note that flow 2' is the same as flow 3' but in a different coordinate...
... (a) -in. aluminum,(b) -in. stainless steel with a 1 -in thick layer of fiberglass insulation on the inside, and (c) of sandwichconstruction with a -in thick layer of stainlesssteel, a 1 -in thick ... defined in terms of the local value by(1.12)For most engineering applications, we are interested in average values. Typical val-ues of the order of magnitude of average convection heattransfer ... mechanisms ofheattransfer have beentreated separately. In practice, however, heat is usually transferred by several of thebasic mechanisms occurring simultaneously. For example, in the winter, heat...
... PROCESSING OF METAL 229 HEAT TRANSFERIN FEMTOSECOND LASERPROCESSING OF METALIhtesham H. Chowdhury and Xianfan XuSchool of Mechanical Engineering, Purdue University,West Lafayette, Indiana, ... L. Tien, HeatTransfer Mechanisms during Short-Pulse Laser Heating of Metals, ASME J. Heat Transfer, vol. 115, pp. 835–841, 1993.5. T. Q. Qiu and C. L. Tien, Femtosecond Laser Heating of Multi-Layer ... LaserHeating, Int. J. Heat Mass Transfer, vol. 44, pp. 1725–1734, 2001.10. L S. Kuo and T. Q. Qiu, Microscale Energy Transfer during Picosecond Laser Melting of Metal Films, Proc. 31st Natl. Heat...
... the increase of the atomic kinetic energy in laser heating, atoms vibrate more in the crystal region, causing a lower peak of the number density of atoms and a wide distribution. As laser heating ... are obtained. First, during picosecond laser heating, the heat transfer process predicted using the continuum approach agrees with the result of the MD simulation. Second, when melting happens, ... Study of Light-to -heat Absorption Mechanism in atomic Systems," International Journal ofHeat and Mass Transfer, 41, pp. 839-849. 3. Häkkinen, H., and Landman, U., 1993, "Superheating,...
... the increase of the atomic kinetic energy in laser heating, atoms vibrate more in the crystal region, causing a lower peak of the number density of atoms and a wide distribution. As laser heating ... metal interaction in two steps including photon energy absorption in electrons and lattice heating through interaction with electrons. A large body of the MD simulation of laser material interaction ... of predicting the heating process induced by a picosecond laser pulse. Laser Induced Phase Change In this section, various phenomena accompanying phase change in an argon target illuminated...
... the increase of the atomic kinetic energy in laser heating, atoms vibrate more in the crystal region, causing a lower peak of the number density of atoms and a wide distribution. As laser heating ... Study of Light-to -heat Absorption Mechanism in atomic Systems," International Journal ofHeat and Mass Transfer, 41, pp. 839-849. 3. Häkkinen, H., and Landman, U., 1993, "Superheating, ... expand in space when heated. Therefore, more heat is stored in the form of potential energy and resulting in a larger specific heat. The specific heat at constant volume is calculated in the...
... the jacket. The flowrate of heating–cooling fluid can be adjusted in order to maintain control over thetemperature in the batch vessel. We often do this by constructing a jacket around theprocess ... 2007 0:57Introduction 7 Of course, this is not exactly what occurs in a real system. Close to the point of intro-duction, the fluid in the vessel will have properties that are some intermediate ... December 21, 2007 23:4568 Heat Exchanger AnalysisBatch and semibatch heat exchangers are used when the heating or cooling of afixed volume of fluid is required, whereas continuous systems are used...
... details1Department of Mechanical Engineering, National University of Singapore, 9Engineering Drive 1, Singapore, 117576 Singapore2Minerals, Metals andMaterials Technology Centre, National University of Singapore, ... con-ductivity of these fluids by suspending nanoparticles of * Correspondence: jc.kurnia@nus.edu.sg1Department of Mechanical Engineering, National University of Singapore, 9Engineering Drive 1, Singapore, ... nanoparticles are given in Table 1. Heat transfer performanceThe heattransfer performance of the cooling channel isdiscussed in terms of the figure of mer it, FoM, which isdefined asFoM =WWpump,(14)Figure...