摘要:

AbstractA two‐layer approach is proposed to compute complex flows including separations. For high‐ and low‐Reynolds‐number regions we use a two‐equationk‐ϵ model and a one‐equationk‐Lmodel respectively. A robust algorithm is proposed for the treatment of the convective part of the turbulence equations. Several complex configurations including separati

ISSN:0271-2091    

DOI:10.1002/fld.1650150702

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA finite difference technique that incorporates a numerical mapping has been successfully applied to analyse both planar and axisymmetric Newtonian jets. A pressure gradient equation and a free‐surface slope equation have been derived for free‐surface iteration. The computation of pressure inside the jet surface using the pressure gradient equation is stable and accurate at high Reynolds numbers. The free‐surface slope equation is needed for updating the free surface and is applicable for jets with strong surface tension effects. The present development can simulate the Newtonian jets for Reynolds numbers as high as 2000 and capillary number as low as 10−5. Numerical predictions by the present technique are close to the results of previous finite element simu

ISSN:0271-2091    

DOI:10.1002/fld.1650150703

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA global method of generalized differential quadrature is applied to solve the two‐dimensional incompressible Navier‐Stokes equations in the vorticity‐stream‐function formulation. Numerical results for the flow past a circular cylinder were obtained using just a few grid points. A good agreement is found with the experiment

ISSN:0271-2091    

DOI:10.1002/fld.1650150704

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractLarge eddy simulation of compressible, homogeneous, isotropic, decaying turbulence in a rectangular box is performed using finite volume techniques. An analysis of the energy spectra obtained from the simulations shows that an agreement with the Kolmogorov law for the inertial range is found only when an appropriate spatial discretization method is used. This agreement is obtained both for a low (0·05) and a moderate (0·6) Mach number when Smagorinsky's subgrid model is employe

ISSN:0271-2091    

DOI:10.1002/fld.1650150705

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractAn approximate method is presented here for estimating the hydrodynamic second‐order drift forces on a pair of bottom‐mounted, surface‐piercing circular cylinders in water of arbitrary uniform depth. The theoretical results are based upon the large‐spacing approximation. Results are presented to illustrate the influence of the various wave and structural parameters on the hydrodynamic forces on each of the cy

ISSN:0271-2091    

DOI:10.1002/fld.1650150706

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

ISSN:0271-2091    

DOI:10.1002/fld.1650150707

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY

ISSN:0271-2091    

DOI:10.1002/fld.1650150701

出版商:John Wiley&Sons, Ltd    

年代:1992

数据来源: WILEY