... Page of Table Test cases for the local two -phase flow measurement Case number Air flow rate (m3/s) Liquid flow rate (m3/s) Flow regime Case number Liquid flow rate (m3/s) Air flow rate (m3/s) Flow ... characteristics of the internal two -phase flow structure of the nanofluid were specified In addition, the heat transfer enhancement of nanofluid can be resulted from the increase of the interfacial ... http://www.nanoscalereslett.com/content/6/1/284 Page of Figure Comparison of the local two -phase flow parameters in the bubbly flow regime Between the pure water and the nanofluid in the bubbly flow regime (jf = 2.8294...
Ngày tải lên: 21/06/2014, 04:20
... algorithm for computing multiphase flow problems with each of the phases modeled by MieGr¨neisen EOS In this algorithm, the multiphase mixtures are modeled as an effecu tive phase with single-valued ... interfaces of compressible multi- fluid flows in multiple dimensions Using the theory of multi- component flows, a fluid mixture model system with single velocity and pressure is recovered to model the ... particularly recommended VOF methods were extended to compressible multi- fluid flows by Parker and Youngs (1992), Miller and Puckett (1996) and Shyue (2006c) One of advantages of VOF methods is that the...
Ngày tải lên: 14/09/2015, 08:44
Báo cáo nghiên cứu khoa học: "NUMERICAL MODEL OF SINGLE PHASE TURBULENT FLOWS FOR CALCULATION OF PRESSURE DROP ALONG GAS PIPELINES " doc
... dL convection In case of vertical flow in the pipeline, the loss of energy is essential due to friction and changing of kinetic energy With assumption of isothermal stable flow and little change ... molarities of mixture p1: input pressure, kPa p2: output pressure, kPa d: diameter of pipeline, m γ g : gas density, kg/m3 (6) (7) • T: temperature of fluid flow, K • Zav: averaged coefficient of compressibility ... combine all the one -phase flow equations of Weymouth, Panhandle A, Panhandle B and Clinedinst in calculating pressure drop along the associated gas pipeline - The first group of input data gives...
Ngày tải lên: 22/07/2014, 10:21
Lattice boltzmann study of near wall multi phase and multi component flows
... Comparison of Couette flow velocity profile 83 Fig 3.3 Comparison of Poiseuille flow velocity profile 84 Fig 3.4 Comparison of velocity profiles along two center lines ( z = H z and y = H y ) for flows ... BOLTZMANN STUDY OF NEAR-WALL MULTI- PHASE AND MULTI- COMPONENT FLOWS HUANG, JUNJIE (B Eng., Tsinghua University, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF MECHANICAL ... developments of lab-on-a-chip devices call for better understanding of small scale multi- phase and multi- component (MPMC) flows for the optimal design, fabrication and operation of these devices...
Ngày tải lên: 14/09/2015, 14:10
Modeling optimizes PEM fuel cell durability using threedimensional multi-phase computational fluid dynamics model
... 3D, multi- phase, multicomponent model of the cathode and anode of a PEM fuel cell J Electrochem Soc., 2003; 150(12): A1589-A1598 [28] Nguyen, P.T.; Berning, T.; Djilali, N Computational model of ... divergence of the mass flux through diffusion and convection Multiple species are considered in the gas phase only, and the species conservation equation in multicomponent, multi- phase flow can ... detrimental effect of the fuel cell performance A unique feature of the model is to incorporate the effect of hygro-thermal stresses into actual three-dimensional fuel cell model This model is used...
Ngày tải lên: 05/09/2013, 14:58
CFD model of air movement in ventilated façade: comparison between natural and forced air flow
... implications of their design decisions There are currently many different modeling approaches used in predicting building ventilation including analytical models, empirical models, multizone models, ... models, experimental models and computational fluid dynamics (CFD) models [2] The use of CFD in particular has risen since 2002 The wide applicability, acceptability of CFD as a ventilation modeling ... Mathematical model of the façade Computational fluid dynamics (CFD) research uses computational and mathematical models of flowing fluids to describe and predict fluid response in problems of interest,...
Ngày tải lên: 05/09/2013, 14:58
Báo cáo khoa học: "What’s There to Talk About? A Multi-Modal Model of Referring Behavior in the Presence of Shared Visual Information" potx
... use of various forms of shared visual information in their everyday communication The development of an integrated multi- modal model of referring behavior can improve the performance of state -of- the-art ... discussing future modeling plans Motivation There are several motivating factors for developing a computational model of referring behavior in shared visual contexts First, a model of referring behavior ... variety of contexts that include visual objects of interest Such systems may benefit from a datadriven model of how collaborative pairs adapt their language in the presence (or absence) of shared...
Ngày tải lên: 24/03/2014, 03:20
Báo cáo khoa học: A kinetic model for the burst phase of processive cellulases pptx
... investigation of burst phase kinetics This is the rationale for using calorimetry in the current work Experimental analysis of the burst phase often utilizes the intersection p of the ordinate ... strand The notion of two partially overlapping phases of the slowdown is interesting in the light of the experimental observations of a double exponential decay reported for the rate of cellulolysis ... Burst phase of processive cellulases E Praestgaard et al phase of the process, where inhibition from accumulated product and or the depletion of good attack points on the substrate are of minor...
Ngày tải lên: 28/03/2014, 23:20
Báo cáo khoa học: "A Context-sensitive, Multi-faceted model of Lexico-Conceptual Affect" pdf
... tens of thousands of instances of this pattern from the Web, to extract sets of adjectival properties for thousands of commonplace nouns They show that if one estimates the pleasantness of a ... affect of words and concepts in context The web application Metaphor Magnet provides a proof -of- concept demonstration of this re-shaping process at work, using the stereotype lexicon of §3, the ... orientation of words using spin model Proceedings of the 43rd Annual Meeting of the ACL, 133–140 Turney, P D Thumbs Up or Thumbs Down? Semantic Orientation Applied to Unsupervised Classification of Reviews...
Ngày tải lên: 30/03/2014, 17:20
báo cáo sinh học:" Narrowing the gap between eye care needs and service provision: a model to dynamically regulate the flow of personnel through a multiple entry and exit training programme" pdf
... iThink model of the nonphysician sector of eye care Using a computable model Figure Scenario10 of personnel flow through a MEES model Scenario of personnel flow through a MEES model Page of (page ... computable model of an eye care MEES showing the stocks and flows of personnel through training and into and out of the The computable model of an eye care MEES showing the stocks and flows of personnel ... dynamic model is proposed from which a number of scenarios can be played out over time in order to show the effects of a range of assumptions and estimates This type of modelling is a synthesis of...
Ngày tải lên: 18/06/2014, 17:20
AA210A Fundamentals of Compressible Flow
... University Department of Aeronautics and Astronautics Problem - Relate the drag of a 2-D airfoil in steady flow to its wake flow field Control Volume Stanford University Department of Aeronautics and ... Volume Stanford University Department of Aeronautics and Astronautics Stanford University Department of Aeronautics and Astronautics ...
Ngày tải lên: 20/06/2014, 16:18
Báo cáo hóa học: " On the stability of the exact solutions of the dual-phase lagging model of heat conduction" docx
... pointed out that the usefulness of the Cattaneo-Vernotte and DPL exact models is limited In this study, by means of the method of separation of variables, the solution of Equation is obtained in a ... effects of the thermal loading and thermal properties of the materials, as was explained by Tzou [3] In this way, the DPL model should provide a comprehensive treatment of the heterogeneous nature of ... the DPL model reduces to the single -phase lagging (SPL) model [3] The time delay tq is interpreted as the relaxation time due to the fast-transient effects of thermal inertia, while the phase lag...
Ngày tải lên: 21/06/2014, 04:20
Báo cáo sinh học: " A deterministic multi-tier model of assortative mating following selection" ppsx
... assortative The multi- tier model allows the distribution of progeny breeding values to be non-normal at each generation by considering it to be composed of a mixture (tiers) of normal distributions ... value (ebv) using an animal model Stochastic simulation is used to evaluate the accuracy of the deterministic multi- tier model MATERIALS AND METHODS The infinitesimal model is assumed in an infinite ... depends solely on the intensity of selection A similar finding of independence in the advantage of opening a closed nucleus was reported for a deterministic model of BLUP selection in 2-tier open...
Ngày tải lên: 09/08/2014, 18:21
Multi-tissue gene-expression analysis in a mouse model of thyroid hormone resistance docx
... (WAT) of TRβPV/PV mice Concurrently, we analyzed the expression profiles of wild-type littermates treated with T3 to uncover T3-responsive genes in the context of normal TRβ in a model of pharmacologic ... core of the desmosome is comprised of proteins of the cadherin family, namely desmogleins and desmocollins In the WAT of RTH animals, we observed a marked upregulation of transcript levels of cadherin ... effects of T3 in the presence of normal TRβ, we used a mouse model of pharmacologic hyperthyroidism by treating the wild-type siblings with T3 (iT3 mice) This model aided in the delineation of genes...
Ngày tải lên: 09/08/2014, 20:20
Báo cáo y học: "Differential response of human basophil activation markers: a multi-parameter flow cytometry approach" pot
... overall procedure of basophil isolation and pooling has the advantages of washing out the plasma and the majority of platelets and of reducing the impact of the great variability of individual responsiveness ... percentage of activated cells was calculated by the software considering the CD63-FITC bright cells counted to the right of a threshold that was established including the main peak of fluorescence of ... diagnosis In dose response curves of fMLP, the full expression of CD203c precedes by one-two orders of magnitude the full expression of CD63 This indicates that low doses of the bacterial peptide mobilize...
Ngày tải lên: 13/08/2014, 13:22
Báo cáo y học: " Extension of Murray''''s law using a non-Newtonian model of blood flow" pptx
... daughter vessels Non-Newtonian model of blood flow Consider the laminar and isothermal flow of an incompressible inelastic fluid in a straight rigid circular tube of radius R and length l as shown ... function of the length lk of the vessel k and the properties of blood, Qκ is the mass flow rate of blood and Rκ is the radius of the vessel k The parameters a and b are only function of the fluid ... none of the existing methods on Murray's law deal with the non-Newtonian behavior of blood flow although, the non-Newtonian approach for blood flow modeling looks more accurate Blood is a multi- component...
Ngày tải lên: 13/08/2014, 16:21
a one-dimensional model of blood flow in arteries with friction, convection and unsteady taylor diffusion based on the womersley velocity profile
Ngày tải lên: 13/11/2014, 10:12
Development of immersed boundary phase field lattice boltzmann method for solid multiphase flow interactions
... simulation of solid-multiphase flow interactions In respect of multiphase flow solver, this work develops a stencil adaptive phase- field lattice Boltzmann method (LBM) for two dimensional incompressible ... to develop a phase- field LBM for simulation of multiphase flows with density contrast Secondly, to simulate the solid interaction with single phase/ multiphase flows, implementation of boundary ... the principle of these schemes is independent of flow field solvers 1.2.2 Lattice Boltzmann methods for multiphase flow simulation The preceding subsection reviewed multiphase flow models that...
Ngày tải lên: 10/09/2015, 09:06
Simulation of multiphase and multi component flows by lattice boltzmann method
... LB models, a LB model for interface capturing, a LB model for multi- phase flows with large density ratio and a LB model for non-sticking multi- component flow were presented The simulation of multiphase ... most of the traditional CFD methods Thus, the calculation is relatively cheap 1.3 Literature review of multi- phase flow modeling The dynamics of flows with interfaces (for example, multiphase flows) ... behavior of the processes involved in multiphase flows These are very useful for industrial applications 1.5 Scope of the dissertation Most of multiphase flows are of liquid/liquid or liquid/gas flows...
Ngày tải lên: 13/09/2015, 21:34
A generalised lattice boltzmann model of fluid flow and heat transfer with porous media
... suitable to simulate flows containing multiple phases and multi- components immiscible fluids of different masses in constant temperature One of the main improvements of this model is to include ... index of spatial dimension d number of spatial dimension b number of spatial dimension in Fermi-Dirac distribution z number of links Z number of discrete particle velocity vi N number of nodes ... models can be taken as the limiting generalized model Additionally, the generalized models mentioned above can be used to model transient flow in porous media Since the analytical solutions of...
Ngày tải lên: 16/09/2015, 12:42