finite volume scheme for compressible multiphase flows

... bounce-back lattice Boltzmann and finite volume scheme with different time scales (IBLF-dts) is constructed upon ILFVE scheme for the simulation of viscoelastic fluid flows in this work The spatial ... integrated scheme 3 IBLF-dts Scheme IBLF-dts scheme is formulated upon ILFVE scheme to integrate bounce-back LBGK model and FVM in the same framework to simulate the isothermal incompressible ... Viscoelastic Fluid Flows with an Efficient Integrated Lattice Boltzmann and Finite Volume Scheme Shun Zou, Xinhai Xu, Juan Chen, Xiaowei Guo, and Qian Wang State Key Laboratory of High Performance Computing,

Ngày tải lên: 02/11/2022, 08:52

... discontinuous finite volume methods for the stationary Stokes–Darcy problem that models coupled fluid flow and porous media flow The discontinuous finite volume methods are combinations of finite volume ... co-volume framework for constructing conservative schemes for elliptic problems Mathematics of Computation 1999; 68(227):991–1011 15 Lazarov, Michev I, Vassilevski P Finite volume methods for ... for elliptic problem, in [17–20] for Stokes and Navier–Stokes problems, and in [21, 22] for some overviews Combining DG and FVM, Ye [23] proposed a discontinuous finite volume method (DFVM) for

Ngày tải lên: 25/01/2022, 13:56

... (1999a) A multiphase Godunov method for compressible multifluid and multiphase flows Journal of Computational Physics, 150:425–467 Saurel, R and Abgrall, R (1999b) A simple method for compressible ... algorithm for compressible multicomponent flow with van der waals equation of state Journal of Computational Physics, 156:43–88 Shyue, K M (1999b) A volume-of-fluid type algorithm for compressible ... (1998) Reconstructing volume tracking Journal of Computational Physics, 141:112–152 Rudman, M (1997) Volume-tracking methods for interfacial flow calculations International Journal for Numerical Methods

Ngày tải lên: 14/09/2015, 08:44

... insight into SOFC operation: finite difference and finite element are the most common modeling approaches employed As an integral form of finite difference discretization, the finite vol-ume method ... cell performances for both coflow and counterflow hydrogen cases are listed in Table 8 5.3 SOFC Performance on CH 4 Containing Fuel With In-ternal Reformation Figures 6 and 7 present results for ... to clarify the effects of SOFC design on performance The cell performance for the mod-eled cases is listed in Table 8 For CH4containing fuel, the per-formance improvement in the counterflow configuration

Ngày tải lên: 19/11/2022, 11:36

... multiply the dierential termsandadditional termsappearin theequations Thereforethedesignofanitevolumemethod is notasstraighforwardasitisin Cartesian ordinatesand additionallyimportant ationproperties ... ordinates,thebasisarespatiallydependent For thepro ofav inthelo basisofthe onding ordinatessystemintro terms fromthevariationsoflo basiswithresp tothevariables ofthe hosen ordinates,and the ationlawsformoftheequationis thereforelost ... ofnitevolumemethod W Trang 4ux F (W ) isav Ina step,wewill the whereW isav whileitsuxF (W )isatensor ∂(J S) ∂ξ k  J V · e k  T examplesfor aretheequationsof tinuityandenergyinuid A tothenitevolumephilosophy,the

Ngày tải lên: 04/12/2022, 10:32

... details on this time splitting scheme for the vertical flow are described in Appendix D 4.3.2 Numerical scheme for surface flow The MacCormack finite difference scheme (MacCormack 1971) is one ... chart for the conjunctive surface-subsurface flow scheme is shown in Fig (4.1) This computation routine needs iterations until solutions are stable for both surface and subsurface flows before ... are simulated for energy flux forecasts For the better prediction of hydrologic processes in the SVAT schemes, the first objective of this research focuses on developing the VAST formulation incorporating

Ngày tải lên: 02/10/2024, 01:46

... if they are distributed throughout the volume of the body, they are called body forces and are expressed in terms of force per unit volume For example, a force such a5 the hydro- static pressure ... due to force Fy with node (2) fixed in position as shown in Fig 1.5(a) Using Eq, (I.1), the force-displacement relation for the node (1) may be expressed as Trang 114 Finite Element Method for Structural ... and the foregoing equations of elasticity theory are Trang 2316 Finite Element Method for Structural Engineers presented ina simplified form In both the cases, itis assumed that the body foree

Ngày tải lên: 23/02/2014, 21:20

... thk scheme for modem, connectionless protocols. ● More experience with the protocol is needed before we can evaluate the practicality of this scheme in the transit case, i.e., where networks enforce ... an organization to accept liability for outgoing ION traffic, or for a particular internal node to accept responsibility for its own outgoing ION traffic. In summary, the visa scheme is developed to address ... transited, we sug- gest the scheme is most practical for the end-to-end case (i.e., only gateways on the source and destination network enforce visa requirements). See sect ion 4.1 for further dis- cussion. Figure

Ngày tải lên: 14/03/2014, 22:20

... surface forcesand are expressed in terms of force per unit area; if they are distributed throughout the volume of the body, they are called body forces and are expressed in terms of force per unit volume ... due to force Fy, with node (2) fixed in position as shown in Fig 1.5(a) Using Eq, (1.1), the force-displacement relation for the node (1) may be expressed Trang 11 4 Finite Element Method for ... displacement and nodal force vectors, respectively -The superscript defines the element number Following a similar approach as for element (c,), the force-displace- rent relationship for element (e,)

Ngày tải lên: 17/03/2014, 12:20

... Forging : Open and closed die forging, forging operations, hammer forging, press forging and drop forging, forging defects,... Detailed Contents 1 Fourier Series Periodic functions, Euler's formula ... series of different wave forms 2 Laplace Transforms Laplace transforms of various standard functions, properties of Laplace transforms, inverse Laplace transforms, transform of derivatives and ... in diameter and internal volume 6. Columns and struts : Columns and failure of columns : Euler’s formuls; Rankine- Gordon’s formula, Johnson’s empirical formula for axially loaded columns

Ngày tải lên: 18/03/2014, 01:21

... equations for form a pressure or pressure-correction equation ([1], [2]). The second group of methods employs the artificial compressibility formulation. This idea was first introduced by Chorin [3] for ... µ t is the turbulent viscosity. An implicit scheme for incompressible flow computation with 3 The above set o f equation is put into non-dimensional form by scaling as follows: x ∗ = x L ; y ∗ = y L ; ... that the non-dimensional form of the governing equations given by Equations (5) is identical (except for the asterisks) to the dimensional form given by Equations (1). For convenience, from now

Ngày tải lên: 28/03/2014, 13:20

... distributed freely for any purposes (see copyright notice below) For information about publishing your research in EURASIP WCN go to http://jwcn.eurasipjournals.com/authors/instructions/ For information ... allocation schemes are proposed In these schemes, each CR user exchange control-information (CI) with the central server to compete for sensed spectrum holes The CI contains the sensed information, ... the sensed information, synchronization information, and power level Based on this exchanged information, the spectrum server forms an optimal schedule for sharing the spectrum holes among competing

Ngày tải lên: 18/06/2014, 22:20

... structure for the proposed methodFigure 1 A sample database structure for the proposed method. Information from the patient and context tables are combined to gen- erate a patient-specific weight for ... proposed routing scheme offers potential cost- savings even when the patient follows only a subset of instructions. Conclusion: The routing method presented reduces the navigational effort for patients ... using a relational database to maintain information about the building structure and mobile entities within, a Dijk- stra routing engine for navigation, WLAN for user locali- zation and a PDA as the

Ngày tải lên: 19/06/2014, 10:20

... solutions over the cells, Uin xi U (tn , x) dx (2.4) Ci A nite volume conservative scheme for solving (1.8) is a formula of the form Uin+1 Uin + t (Fi+1/2 Fi1/2 ) = 0, xi (2.5) telling how ... minimal property required for a scheme to ensure that we approximate the desired equation For a conservative scheme, we dene it as follows Denition 2.1 We say that the scheme (2.5)(2.6) is consistent ... property for a scheme to preserve an invariant domain is an important issue of stability, as can be easily understood In particular, the occurrence of negative values for density of for internal...

Ngày tải lên: 23/03/2014, 01:20

... Station Cataloging-in-Publication Data Berger, Rutherford C A finite element scheme for shock capturing / by R.C Berger, Jr., ; prepared for Assistant Secretary of the Army (R&D) 61 p : ill ; ... (ILIR) Program The funding was providing by ILIR work unit "Finite Element Scheme for Shock Capturing." Dr R C Berger, Jr., ED, performed the work and prepared this report under the general supervision ... the Euler equations with the depth substituted for density and dropping the energy equation This equation set is ideal for testing numerical schemes for the Euler equations The model developed can...

Ngày tải lên: 20/06/2014, 17:20

... is precisely what our scheme does Therefore, the Petrov-Galerkin scheme we are using to address advection-dominated flow is a good scheme for shock capturing as well The scheme dissipates energy ... simulation chosen here is a PetrovGalerkin finite element method applied to the shallow-water equations For the shallow-water equations in conservative form (Equation I), the Petrov-Galerkin test ... what happens in a numerical scheme in which the depth is approximated as CO;i.e., it is continuous We are onIy enforcing mass and momentum, but we are implicitly enforcing energy conservation...

Ngày tải lên: 20/06/2014, 17:20

... reasonable The test results for stations 4, and are shown in Figures 24-26 Here the time-history of the water elevation is shown for the inside and outside of the channel for both the numerical model ... than for the flume This is roughly 1-2 percent fast For of 1.5 the time of arrival is 3.55 sec which is about 0.1 sec late (3 percent) At station both flume and numerical model arrival times for ... Figure 20 Error in model shock speed with grid refinement for = 1.5 Figure 21 Relative error in model shock speed with grid refinement for at = 1.5 Chapter Testing Simpo PDF Merge and Split Unregistered...

Ngày tải lên: 20/06/2014, 17:20

... this analysis for a = 112 and for the temporal derivative parameter at of 1.0 and 1.5 We shall compare the relative amplitude and relative speed for a single time-step The parameter for relative ... less than for the first-order case The relative speed is better but not so dramatic as the improvement in amplitude An interesting point is that the relative speed for N = is nonzero for lower ... below C values of 0.5 As with q = 1, for very low C the numerical relative speed is greater than the analytic Therefore, we would expect to have an undershoot for small time-steps It should become...

Ngày tải lên: 20/06/2014, 17:20