interview questions asked in heat transfer

... in Tissue Heat Transfer, Annals of the New York Academy of Sciences, Vol 3 35, pp 137– 150 , ISSN 0077-8923 Cho, Y.I (1992) Bioengineering Heat Transfer, In: Advances in Heat Transfer, ... that the main challenge in solving this bioheat equation is in the evaluation of the local blood mass flux bl h v ρ (Minkowycz et al., 2009). 3.3 Klinger continuum model In 1974, Klinger presented ... Developments in Heat Transfer 154 vasoconstriction. Then, the Simplified Thermoregulatory Bioheat (STB) model is introduced for evaluating heat transfer within the segments of the human body. Finally,

Ngày tải lên: 19/06/2014, 10:20

... application is in mould and dies making industries... selected as the dielectric fluid in the present study 424 Developments in Heat Transfer The product of machining, the tiny debrtis ... approximated the heat source by a point instead of a disk for conducting heat to the interior The point heat source can result in. .. is applied to the workpiece; it eliminates the mechanical ... corresponding height, H, from the minimum volume decided in step (1) Using... die-casting dies and moulds are made of hard materials to increase their lifetime The recent developments in cutting

Ngày tải lên: 19/06/2014, 10:20

... found during machining of aluminum using a copper electrode 5 MRR increases sharply with increase in current In the present study, highest MRR was obtained during machining of aluminum using a brass ... heat is utilized in removal of material from aluminum workpiece of low melting point But during machining of steel using copper electrodes, comparatively smaller quantity of heat is absorbed ... comparatively more heat energy to dissipate into the electrode during machining of mild steel 4 Wear ratio decreases with increase in current, but decreases with increase in gap voltage The highest

Ngày tải lên: 19/06/2014, 10:20

... explained The little peak of the heat flux in the beginning originates from the existence of the strong recirculation zone there Then the heat flux gets up continuously with the increasing intensity ... measurement of single-injector heat transfer characteristics in a heat sink chamber was expound in this chapter A series of measurement points are designed in the chamber with the same axial intervals ... of heat transfer on hydrate film growth at the guest/water interface than intrinsic kinetic and mass transfer mechanisms In this part, different hydrate film growth models, especially heat transfer

Ngày tải lên: 19/06/2014, 10:20

... Temperature Heat Pipes 511 3 Startup analysis of alkali metal heat pipe For alkali metal heat pipes, commonly, the working fluid in heat pipes is solid state The heat transfer into the evaporator ... make the solid working fluid melt, then one equivalent heating section is formed If the heat pipe is started up by heating one end, such as the heat pipe has only one end heating section for the ... conduction (in Chinese), pp.74-80, Proc of 11 th China Heat Pipe Conference, Weihai, China Zhuang J and Zhang H.(2000) Heat Pipe Technology and Engineering Application, pp.166-173, Chemical Industry

Ngày tải lên: 19/06/2014, 10:20

... understood by considering the combined effect of the laser heating and heat conduction of the heated PWS to the neighbor colder dermis As the laser heating prolongs over a long pulse, the heat conduction ... Bioheat transfer analysis of cryogen spray cooling during laser treatment of Port Wine Stains Lasers in Surgery and Medicine, Vol.26, No.2, (February 2000), pp 145-157, ISSN 0196-8092 Pickering, ... in clinical practice Quantitative information for critical surface cooling technique, CSC, is also presented and included in our model Although great progresses have been achieved in both clinic

Ngày tải lên: 19/06/2014, 10:20

... of heat transfer in underground mining 3.1 Case study in Portuguese Neves Corvo mine Vertical underground opening The Neves Corvo mine is an operating underground copper and zinc mine in the ... temperature in Neves Corvo mine was maximum 24.5ºC in July, minimum 9.0ºC in January and mean being 15.6ºC and in San Rafel Trang 3mines was maximum temperature was 8.8ºC in November, minimum 4ºC in July ... that obtain increasing for the total temperature increment Δttotal the initial temperature in the underground opening branch (t 1 ) In San Rafael mine measured average minimum temperature in July

Ngày tải lên: 19/06/2014, 10:20

... polymerization kinetic In the proper conditions the polymer reacts mainly in the interface... turbulent heat transfer characteristics in Pr=25 were reported for the first time Maximum heat transfer ... acrylate latexes; and aminoaldehyde resins (Boh & Knez, 2006) In our previous work, the fixation of PCM microcapsules containing paraffin with a melting point around 40ºC, into a cotton textile ... similarity of heat transfer degradation in high-Pr MHD flows seemed be existed On the MHD heat transfer in high-Pr... Sánchez and Juan F Rodríguez Department of Chemical Engineering/University

Ngày tải lên: 19/06/2014, 10:20

... symmetrical side induction heaters, b) rod held by a heatsink along its length with end induction heater and c) end induction heated thin disk (dark) with a cap 2.1.1 Side heating The boundary ... than the above model for side heating The main difference is in defining the heat source as an exponentially decaying function along the rod axis Thus in end heating the temperature becomes maximized ... a non-heating material, is bonded to the rod at the entrance A non-heating material may be one which does not contain a heat source The non-heating end-cap conducts the heat generated in the

Ngày tải lên: 19/06/2014, 10:20

... convection in inclined cavity……… 148 Figure 5.25 Streamlines in inclined cavity atPr=0.1………148 Figure 5.26 Isothermals in inclined cavity atPr=0.1………148 Figure 5.27 Streamlines in inclined cavity ... of fin pitch, tube pitch, fin height, tube thickness and tube ellipticity on heat transfer and pressure drop in the plain fin-and-tube heat exchanger, they found that heat transfer can be increased ... widely adopted, especially in the air heat exchanger, such as heat exchangers used in heating, ventilating, air conditioning, refrigeration and compressor intercooler In these cases an array of

Ngày tải lên: 11/09/2015, 16:02

... -6.4648 4.4 Rate of heat transfer The rate of heat transfer at the wall i.e the heat flux in terms of Nusselt number N u for different values of α and K p are entered in Table 2 The heat flux at the ... non-Newtonian fluid The unsteady MHD convective heat transfer past a semi-infinite vertical porous moving plate with variable suction was investigated by Kim [11] Singh and Sharma [12] analyzed the three ... sign in the above equation indicates that the suction is towards the plate Due to this kind of injection velocity the flow remains three dimensional All the physical quantities involved are independent

Ngày tải lên: 05/09/2013, 14:58

... http://www.informaworld.com/smpp/title~content=t713657973 HEAT TRANSFER IN FEMTOSECOND LASER PROCESSING OF METAL Ihtesham H Chowdhurya; Xianfan Xua a School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA. Online Publication ... arising directly or indirectly in connection with or arising out of the use of this material. Trang 2Downloaded By: [Ingenta Content Distribution] At: 19:07 13 December 2007 HEAT TRANSFER IN FEMTOSECOND ... Ihtesham H and Xu, Xianfan (2003) 'HEAT TRANSFER IN FEMTOSECOND LASER PROCESSING OF METAL', Numerical Heat Transfer, Part A: Applications, 44:3, 219 - 232 To link to this article: DOI: 10.1080/716100504

Ngày tải lên: 06/05/2014, 08:53

... spiral, in-plane spiral, and helical spiral with water as the base working fluid Since the con-vective heat transfer inside the tube is directly linked to flow behavior, it is of interest to investigate ... suspending nanoparticles of * Correspondence: jc.kurnia@nus.edu.sg 1 Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576 Singapore ... passive heat transfer enhancement techniques in heat and mass transfer applications due to the presence of secondary flows which improve heat and mass transfer rates They have been widely used in

Ngày tải lên: 21/06/2014, 03:20

... wetting and heat transfer characteristics of nanofluids and their applicability in industrial quench heat treatment Abstract The success of quenching process during industrial heat treatment mainly ... depends on the heat transfer characteristics of the quenching medium In the case of quenching, the scope for redesigning the system or operational parameters for enhancing the heat transfer is very ... exploiting them as quench media for industrial heat treatment Introduction Quench hardening is a commonly used heat treatment process in manufacturing industry to increase the ser-vice reliability

Ngày tải lên: 21/06/2014, 04:20

... a thin hot wire embedded in a cylind-rical container insulated on its top and bottom one can assume that the heat is transferred in the radial direc-tion only, r, rendering Equation (2) into ... platinum wire, it can be regarded as a line heat source in an otherwise infinite cylindrical medium The rate of heat generated per unit length (l*) of platinum wire due to a step change in voltage ... [22] to investi-gate the transient heat conduction in a fluid containing suspended solid particles by considering phase-averaged equations will be presented only briefly without includ-ing the

Ngày tải lên: 21/06/2014, 05:20

... systems, inverse space marching method, heat transfer in short slot ducts, freezing an drying mechanisms, variable property effects in heat transfer, heat transfer in electronics and process industries, ... combustion, heat transfer in liquid metal flows, human comfort in underground mining, heat transfer on electrical discharge machining, mixing convection are included in this book aiming. The ... phenomenon is initiated only in a local heating point, thus in our model we assume an initial hot zone with the temperature above the critical value T c . Developments in Heat Transfer ...

Ngày tải lên: 19/06/2014, 10:20

... been obtained, we combine all these partial maps (J s , resp. Υ s ) into single ones (J, resp. Υ) in the following way: 31 Heat Transfer for NDE: Landmine Detection Developments in Heat Transfer ... Landmines from Measured Infrared Images using Thermal Modeling of the Soil, PhD thesis, Universidad de Santiago de Compostela. 44 Developments in Heat Transfer Heat Transfer for NDE: Landmine ... the heat input increases. At maximum heat input (23A for every single channel) in this experiment, the equivalent weight heat transfer rate of non-uniform cross- Magneto Hydro-Dynamics and Heat...

Ngày tải lên: 19/06/2014, 10:20

... solution containing the product is generally processed in vials, placed over the shelves in a drying chamber. However, it is worth stating that, in industrial practice, other loading configurations ... radiation and heat conduction though the metal frame, vials at the edge of the batch Heat Transfer in Freeze-Drying Apparatus 93 Firstly, the heat transfer coefficient between the heating shelf ... considering the recurrence interval of general active faults in Japan, ranging from 1000 to 10000 years Developments in Heat Transfer 76 from plasma and the heat generated in itself...

Ngày tải lên: 19/06/2014, 10:20

... Concerning that structure of hot water heating coil pipe is buried under the floor in radiant floor heating system in general, heat transfer phenomena from hot water pipe to floor and ceiling ... to maintain 22.8°C, the mean indoor temperature. The indoor air maintains a temperature of 33.1°C after initially increasing to 24.1°C. The flow rate steadily decreases but its drop dwindles ... floor heating system may contain long time delay as inappropriate response characteristics on indoor temperature control due to significant influence of thermal inertia when performing indoor...

Ngày tải lên: 19/06/2014, 10:20