Abstract
The traditional method of determining the forces induced on structural elements has been to consider the force to be due to linear combination of an inertial contribution and a drag contribution, or FT = FI + FD Each of these time-varying components has then been formulated in terms of (i) geometrical properties of the structure, (ii) fluid properties describing the flow field and (iii) some “variable constants” which have been determined empirically. A great deal of effort has been devoted to an improved description of the flow field as discussed in Part I of this text and perhaps even more effort has been expended on correlations of the empirically determined “variable constants”. The purpose of this chapter is to describe and illustrate how these constants may be estimated and to indicate to what extent these predictions may be in error. To a large degree, these empirically determined constants exhibit a good deal of scatter in the data as published in the pertinent literature but usually (there are some notable exceptions) the scatter is not accounted for except in terms of experimental error in the acquisition of data.
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Muga, B.J., Wilson, J.F. (1970). Fluid-Induced Forces. In: Dynamic Analysis of Ocean Structures. Ocean Technology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1848-4_7
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DOI: https://doi.org/10.1007/978-1-4684-1848-4_7
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