principles of heat flow in fluids

... on the application of methods of computational neurobiology to an understanding of the development and functioning of the nervous system Principles of Computational Modelling in Neuroscience David ... provide indirect measurements of the quantities of interest, and models are used to infer the behaviour of the interesting variables An example of this is given in Box 1.2 (2) Modelling removes ... This page intentionally left blank Principles of Computational Modelling in Neuroscience The nervous system is made up of a large number of elements that interact in a complex fashion...

Ngày tải lên: 28/06/2014, 20:20

... the effects in your life, you have to change the nature of your thinking Love in your mind produces love in your life This is the meaning of Heaven Fear in your mind produces fear in your life ... began to realize that taking love seriously would be a complete transformation of my thinking A Course in Miracles calls itself a ‘mind training’ in the relinquishment of a thought system based ... prestige—we are loving things that can’t love us back We are searching for meaning in the meaningless Money, of itself, means nothing Material things, of themselves, mean nothing It’s not that...

Ngày tải lên: 04/07/2014, 15:17

Ngày tải lên: 13/11/2014, 10:12

... domains 19 DNA-binding Domains In accord with the sequence and structure of DNA-binding domains, regulatory proteins are often grouped into class The goal function of the DNA-binding domain rules ... focus of interest in the gene expression area Many classes of DNA-binding domains have been described in eukaryotes [41] Some DNA-binding proteins not fit into any of the defined class, whilst in ... reachable they bind to combinations of activators Binding of activators is commonly cooperative, in which one protein only binds weakly, but multiple activators engage in protein– protein interactions...

Ngày tải lên: 25/03/2015, 09:45

... Review of Heat Conduction in 1D systems 1.3 14 Literature Review of Heat Conduction in 1D systems 1.3.1 Breakdown of Fourier’s law The starting point for the study of heat conduction in 1D lattice ... kind of way to introduce nonlinear interaction based on the following consideration: the original independent normal modes in harmonic lattice will be scattered by the presence of disorder In ... averages of kinetic energy of particles change smoothly along the lattice chain except in the two ends contacting with heat baths 1.2.3 Heat flux To measure the heat conductivity, we need a meaningful...

Ngày tải lên: 13/09/2015, 19:52

... secondary flow The description in the previous sections for swirling flow in a single bend also occurs in the first bend of an S-duct Hence, a pair of helical vortical flow exists in the first bend of ... discussion of the flow development in S-shaped ducts will be presented 1.3 Flow in S-shaped Ducts As stated in the previous section, the internal flows in curved S-shaped ducts are often found in various ... development of secondary flow in the form of a pair of counter rotating vortices in the stream wise direction in both the laminar and turbulent regime But the differences lie in the magnitude of the...

Ngày tải lên: 14/09/2015, 08:37

... flow visualisation can be conducted and viewed from the side and the top The coordinate system used in this experiment is shown in Fig 2.3 and its origin is at the center of the inlet plane of ... be inserted into the wind tunnel A diffuser was installed downstream of the test section and it is 2000 mm in length, with a half angle of 3.5O and an area ratio of 5.585 The exit of the diffuser ... uncertainty in the flow velocity measurement is about 1% at Um = 15 m/s The inlet boundary layer thickness for a flow speed of 15 m/s was 7.5 mm (or 0.05D) Error analysis is given in Appendix D of...

Ngày tải lên: 14/09/2015, 08:37

... in Fig 3.4(a) and (b), the experimental CP distribution for the flow in square cross sectioned S-duct shows a point of inflection which indicates that flow separation is present Evidence of flow ... results in a stronger adverse pressure gradient, the existence of flow separation in TS to TS is not surprising This can be observed in Fig 3.4(a) and (b) where a point of inflection is present in ... resulting in the experimental data deviating from the unit gradient line Finally, the work presented in this chapter could be useful for engineers who are designing or calibrating elbow flow meters...

Ngày tải lên: 14/09/2015, 08:37

... flow in region A and B meet and subsequently separate along the dividing line Hence, this dividing line is actually a flow separation line, resulted from the “meeting” of swirling flows of opposite ... location of flow reversal on the bottom floor of the S-duct (in Fig 4.5) corresponds approximately to the location of the dividing line near the S-duct exit (in Fig 4.3) The oil streaks in region B of ... presence of this line marks two flow regions denoted as region A and B in the figures On closer inspection of the streaks in region A in Fig 4.3(a) to (c), it is noted that the flow, upon entering...

Ngày tải lên: 14/09/2015, 08:37

... generation of the initial swirl in the first bend of the S-duct, the production of stream-wise vortices and the formation of the dividing line on the bottom wall of the S-duct The effects of inlet ... to that at a thinner boundary layer of 0.05D Hence one of the effects of increasing inlet boundary layer thickness is to increase the swirl magnitude in the subsequent downstream flow To show this ... transmitted upstream, and the incoming flow at the inlet is diverted towards the near-side wall (lower static pressure side), resulting in a cross flow at the inlet of the S-duct On Plane 2, Fig...

Ngày tải lên: 14/09/2015, 08:37

... indicated in Fig 6.1(b) Also shown in Fig 6.1(b) is the coordinate system used in this experiment Its origin is at the center of the inlet plane of the S-duct, with the positive scoordinate pointing ... distribution shows a distinct inflection point on the near-side wall indicating the presence of flow separation Next, the flow control devices are installed upstream of the separation point where the near-side ... wire flow visualization was performed on the inner wall of the first bend of the Sduct to show the presence of flow separation and the effectiveness of flow control devices on suppressing flow...

Ngày tải lên: 14/09/2015, 08:37

... led to increased swirl flow in the first bend of the S-duct The difference in the swirl magnitude led to velocity gradients of ∂u/∂z produced in the vicinity of 83 the inflection plane of the ... elimination of flow separation in the first bend and the changes in the configuration and position of stream-wise vortices on the outer wall of the second bend These findings indicate competing ... improving flow uniformity at the exit In fact, these three methods increase the swirl in the Sduct as a result of an increase in the radial pressure difference between the side walls The increase in...

Ngày tải lên: 14/09/2015, 08:37

... Schematic of particle flow in three different flow patterns in pneumatic conveying: (a) Dispersed flow; (b) Reverse flow; (c) Half-ring flow; (d) Reverse flow with pulsating wave Figure 4.2 Images of ... forces on single particle in the entire reverse area of inclined pneumatic conveying (air flowrate=1100L/min) Table 5.1 Physical properties of particle Table 5.2 Comparison of solid flow rates ... flows: disperse flow (air flowrate 1600L/min, air superficial velocity 21.2m/s), half-ring flow (air flowrate 1000L/min, air superficial velocity 13.3m/s), ring flow (air flowrate 860L/min, air superficial...

Ngày tải lên: 14/09/2015, 09:07

... capable of obtaining the detailed flow structures between two consecutive ribs with reasonable accuracy In a recent study, Cho et al [12] investigated the effect of a gap in the inclined rib on heat ... optimum width of a gap in the inclined rib to form discrete rib This study will help in determining the gap size while descritizing the inclined (non-transverse) ribs for enhancing the performance ... the gap in the inclined rib releases the air partly belonging to the secondary flow and partly belonging to the main flow through the gap As a result of the presence of gap, the secondary flow along...

Ngày tải lên: 05/09/2013, 16:10

... applications in terms of amount of heat transferred Nanofluids Four square cross section tube geometries were examined for flow of nanofluid suspensions of water-Al2O with nanoparticle concentration of ... Department of Mechanical Engineering, National University of Singapore, Engineering Drive 1, Singapore, 117576 Singapore 2Minerals, Metals and Materials Technology Centre, National University of Singapore, ... of fluid dynamic and heat transfer performance of Al2O3 and CuO nanofluids in the flat tubes of a radiator Int J Heat Fluid Flow 2010, 31:613-621 Mokmeli A, Saffar-Avval M: Prediction of nanofluid...

Ngày tải lên: 21/06/2014, 03:20

... within the next IR images of heat field and sap flow of lime 207 Figure Frontal IR-images of the heat field around the linear heater in stem of Tilia_1 for periods when the heater was switched off ... panels in Fig 9B - no flow occurred any more in the right stem side after its cutting), flow slightly increased there using the remaining part of water source (roots) towards the same sink (remaining ... configuration according to existing sap flow rates just from the beginning of heating 3.2.2 Radial view under switching on the heating IR-images demonstrate radial patterns of flow through the whole stem...

Ngày tải lên: 08/08/2014, 01:22

Ngày tải lên: 08/08/2012, 17:20

... Modeling Simultaneous Heat and Mass Transfer in Isotropic Sphere, Trans ASEA, pp 31 Husain A., Chen C.S., Clayton J T, Whitney L.F (1972), Mathematical Simulation of Mass and Heat Transfer in High ... Mathematics of Diffusion, Oxford University Press, Bala, B K (1998), Solar drying systems: Simulations and optimization, Agrotech Publishing Academy, Udaipur, pp 131-133 Haghighi K., Segerlind L.J, ... Trans ASAE, pp 55-59 224 Husain A., Chen C.S., Clayton J T (1973), Simultaneuos Heat and Mass Diffusion in Biological Material, Trans ASAE, pp 69-73 Luikov, A V (1980), Heat and mass transfer, Mir...

Ngày tải lên: 28/08/2013, 08:31

... air gap with a minimum of cm The role of this layer is to prevent heat getting into the building in summer and take moisture out of the building In this ventilated gap the aluminum substructure ... one of the more affecting factors to increase the efficiency of the façade is the external air temperature The presence of ventilated façade in a building leads to a cooling effect in the skin of ... Miguel Mora Pérez M.Sc .in Industrial Engineering, Master in Energy Technology for Sustainable Development and Research Engineer in the Department of Hydraulic Engineering (Universidad Politécnica...

Ngày tải lên: 05/09/2013, 14:58

... largely offsetting efficiency gains in the conventional end-uses of heating, cooling and water heating [7] The present work focuses on determining the efficacy of using heat pumps as the main source ... method of heating (see Figure1), approximately 27% of the homes are using heat pumps, 33% are using gas heating, 11 % are using electrical furnaces, and 29% are using combined methods for heating ... use of heat pumps provides significant energy savings over alternative heating sources during the heating season in Eastern North Carolina ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2012 International...

Ngày tải lên: 05/09/2013, 16:10