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A technique for treating certain mixed boundary value problemsis presented, and illustrated by its application to a probleminvolving short surface waves in infinitely long canals. Twocases are treated, namely canals of segmental and triangularcrosssections. The method consists of expanding a power series in a workingplane (a semi-circle), and results, in the examples given, inan infinite set of equations, although satisfactory numericalvalues may be obtained by truncation. 相似文献
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