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head sea 逆浪,頂頭浪。

head smut

He was not only useless as an officer , and a bad influence amongst the men , but it was plain that at this rate he must soon kill himself outright ; so nobody was much surprised , nor very sorry , when one dark night , with a head sea , he disappeared entirely and was seen no more 他不僅是個在船員們中間起不良影響的無用的官長,而且很顯然,若按這個情形發展下去,他一定會很快結果掉自己的。因此,在一個漆黑的夜晚,當他一頭栽到海里,完全消失再也不見蹤影時,沒有人大驚訝或是格外難過。

This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas , obtains stable time course by resolving in time domain , and then pressure vectors will be available . the pressure includes static pressure , incident waves pressure , diffraction pressure , radiation pressure , and wave impact pressure , and changed with instantaneous draft of each intersection 該方法應用擴展的切片理論建立迎浪規則波中船舶非線性運動方程,通過時域步進求解獲得船舶剛體運動的穩定時歷,進而給出與船體各橫剖面瞬時吃水相對應的靜水壓力變化、入射波壓力、繞射壓力、輻射壓力和波浪沖擊壓力諸分量。

When sailing in waves , a part of ship bow will depart from water surface because of the significant heave and pitch ( mostly happened at bow in head seas , and may happened at stern in follow sea ) . when ship enter into water once again , violent impact with waves will happen , which is called slamming 當船舶在波浪中航行時,由于劇烈的垂蕩和縱搖,船底的一部分會露出水面(主要是在迎浪時發生在船體前部,但在低速隨浪時也可能發生在船體后部) 。

The strip method was applied to the motion prediction of the monohull . the time range solutions of heave and pitch were obtained in the condition of head sea to provide the primary data on panoramic simulation 本文利用切片法對0371g艇加裝縱向組合減搖附體前后的運動進行預報,取得了迎浪狀態下升沉和縱搖的時歷解,為視景仿真提供原始數據。