ary point distributions. Rai and Anderson [7] presented a scheme based on an attraction model between points based A technique to solve the Poisson grid generation equations by Green's function related methods has been proposed, with the on analogy with gravitational fields. Brackbill and Saltzsource terms being purely position dependent. The use of distribman [8] solved the variational equations that optimize a uted singularities in the flow domain coupled with the boundary prespecified quantitative measure of the required grid element method (BEM) formulation is presented in this paper as a properties to produce adaptive grids. Anderson [9, 10] first natural extension of the Green's function method. This scheme developed the analytical relationship between the source greatly simplifies the adaption process. The BEM reduces the dimenterms in the Poisson grid generators and grid point clustersionality of the given problem by one. Internal grid-point placement can be achieved for a given boundary distribution by adding contining, opening the way for true adaptive control using elliptic uous and discrete source terms in the BEM formulation. A distribugrid generators. Liao and Anderson [11] recently applied tion of vortex doublets is suggested as a means of controlling gridconcepts from deformation theory, originally proposed by point placement and grid-line orientation. Examples for sample Moser [12], to generate grids including a guarantee of adaption problems are presented and discussed. แฎ 1996 Academic uniqueness and existence.