boundary surface wave 中文意思是什麼
boundary surface wave
解釋
界面波-
Finally a set of equations with initiate values for boundary value problem is established where the velocity potential and its normal derivative are unknowns. because the model includes the effects of both the time and space to the velocity potential of free surface, it can be applied to strong nonlinear wave. as examples, solitary wave is computed in the numerical flume
推導給出計算域內以所有節點波勢函數和波面位置高度的時間增量為未知量的線性方程組，並同時考慮時間因素和空間變位對波面勢函數的影響，在預設的計算精度下，通過時步內的循環迭代逐一確定每個時步上的波面運動位置，從而建立了一種可適于求解強非線性波浪變形計算的數值模式。 -
In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。 -
Abstract : the effects of young ' s modulus on the wave velocity, on the potential energy and kinetic energy in arbitrarily volume in the maocinery longitudinal and on the vibration phase among incidance ware, reflex wave and transmission wave at the boundary surface of two kinds of medium are discusseed
文摘:本文就楊氏模量在機械縱波中的波速、任意體積內的勢能和動能及在兩種介質界面處入射波、反射波、透射波的振動周相關系中的作用作了闡述。 -
Wave propagation in a liquid - saturated porous solid with micropolar elastic skeleton at boundary surface
所對應的重力波拖曳比反向切變 -
Currently, cylinder2 - 1 / 2d includes boundary conditions for the electric and magnetic fields at the surface of ideal conductors, the cylindrical axis, the incoming wave ports. a new and simple model for explosion electron emission from cathode surfaces is described
程序中實現了多種邊界條件，如良導體、對稱軸、入射波等，詳細地介紹了陰極表面爆炸發射電子的演算法處理和程序實現。 -
Different from cyclic loading acted on onshore foundation, the wave pressure plays double roles as : the surface loading imposed on the mudline and the boundary condition of excess pore pressure
與常規陸上荷載不同，波壓力不僅是外加的循環表面力，而且是海床表面的超靜孔隙水壓力邊界條件。 -
A new viewpoint to the albatross ' s high performance of flight near wave surface is presented in this paper. how the albatross can realize it high performance flight above waves by taking advantage of wavy effect and boundary effect is illustrated in details
研究了信天翁在波浪上飛行時的氣動力和運動，對信天翁在風浪中高效飛行的機理提出了新的見解，詳細論證了信天翁利用波動效應和壁面效應在風浪場中實現低能耗飛行的原因。 -
In the numerical simulation, the open boundary and 1 : 1 slope on the end of the wave tank are considered with the other conditions same as the physical experiment ; the interaction between surface waves and the triangle / trapezium sandbars on the seabed is also studied
數值模擬中，除了對水槽末端為開邊界及1 ： 1斜坡、其餘條件與物理模型試驗相同的情形進行了研究之外，也對波浪與三角形和梯形沙壩地形的相互作用進行了研究。
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