Generating the non-orthogonal curvilinear grids to locations of source/sink points in the computational domain is unable to be achieved by solving the elliptic differential equations. The main reason lies in the fact that the control functions in the differential equations may be incorrectly calculated at the beginning of iterations and usually remaining at the same value throughout iterations. Hence, this paper proposes a procedure to adjust the control functions, so the grids can be precisely generated to specified locations and the contraction of grids to specified locations can also be controlled. To show clearly the shrinkage of grids, the shrinking processes emerge as the dynamic demonstration using Java of grid graphs embedded in the World Wide Web.
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