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(Block 10) 



Program Element 61153 N 23 

 Project Number SR 02301 

 Task Area SR 023-01-01 

 Work Unit 1552-070 



(Block 20 continued) 



and versatile orthogonal coordinate system is used in place of the 

 streamline surface coordinate system; and finally, an improved 

 numerical method is used for solving the momentum- integral boundary- 

 layer equations. It is shown that the boundary layer calculation 

 method, developed here, can be used to calculate certain boundary 

 layer parameters, such as boundary layer thickness or skin friction, 

 with fair accuracy over a large portion of hulls that maintain un- 

 separated flow. The surface coordinate system can also be used in 

 other methods for calculating the boundary layer. 



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