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通常计算海水条件密度σ_t值时,不是要利用一些表格~((1)、(2)),就是要使用一些图线~(3),仅计算一个σ_t值就比较费事,如需计算大量的σ_t值时,那就要花费很多的时间了。其困难所在,是不论查表还是查图,都需要经过多次内插求值的缘故。为此,本文设计一种海水条件密度σ_t查算仪,可迅速地将σ_t值直接查算出来,毋须经过内插计算,且这样查算出来的海水条件密度σ_t值,能满足精确海流计算(例如动力计算)的要求。
Generally, when calculating seawater density σ_t, it is not necessary to use some tables ~ ((1), (2)), but to use some lines ~ (3). It is time-consuming to calculate only one σ_t value. σ_t value, it takes a lot of time. The difficulty lies in that it is necessary to go through many times of interpolation to evaluate whether the look-up table or the chart is checked. Therefore, this paper designs a seawater conditional density σ_t calculator that can quickly calculate the σ_t value directly, without the need of interpolation calculation, and the calculated seawater condition density σ_t value can meet the exact current calculation Such as dynamic calculation) requirements.