| 1. | When the model is applied to a historical dam - break flood , the computational results agree well with hydrographic station records and flood tracking investigation 依据水量平衡原理及水流连续性条件,建立了支流蓄泄库容关系和支流倒回灌数学模型。 |
| 2. | In order to satisfy the continuity constraint and ensure the smoothness of pressure field , an optimum way to derive a discrete pressure equation is used 为较好地满足连续性条件的基础上得到光滑的压力解,对压力poissom方程离散式采用了一种修正方法。 |
| 3. | In the case of thin slot , taking the effect of wall thickness into account , the coupler is analyzed with the slots replaced by equivalence magnetic current using the equivalence principle . the integral equation system is fonned and calculated by the moment method 对于细长缝隙的情况,考虑了波导壁厚,利用等效原理将缝隙等效为磁流源在主波导和耦合波导中的作用,根据电磁场连续性条件建立积分方程,并用矩量法求解,进而求出耦合器的散射参数。 |
| 4. | 2 . in this paper , the continuity of the wavefunction and of its derivative divided by the band - mass can be satisfied and the number of the terms is small when calculating the energies of the single electron in a square quantum wire with finite barriers , then this wavefunction can also be selected as the envelope function in studying the impurity states and the excitons in the square quantum wires with finite barriers 2 .由于本文所取波函数满足波函数的连续性条件和粒子流的守恒条件,并且计算有限深方形量子线中单电子的能量时需要展开的项数较少,故此波函数也可选为有限深方形量子线中杂质态、激子等问题的包络函数。 |
| 5. | A concept named modified or generalized simply supported edges is therefore introduced , i . e . , superimposing altogether the solutions to the rectangular plate with four simply supported edges on which the uniformly distributed load locally acts , to the rectangular plate with four simply supported edges of which one of them is under the action of distributed bending moment and to the rectangular plate with various generalized simple supported edges and then taking the continuity condition of boundary , so as to let the result of superimposition satisfies all boundary conditions , an analytic solution is given to the rectangular overhanging plates on which any kinds of loads are acting 使用了变相的或广义简支边的概念,将四周简支局部作用分布载荷矩形板的解、四周简支一边作用分布弯矩矩形板的解及各种具有广义简支边的矩形板的解进行叠加,并应用边界连续性条件,令这样的解满足所有边界条件,得到了任意载荷作用下矩形外伸板的解析解。 |
| 6. | Based on the green ' s formula and the assumption of the propeller blade ' s thin sections , a lifting - surface method of propellers with the vortex lattice and equal source panel distributions on the mean camber surface has been introduced for the prediction of steady propeller ' s hydrodynamics in this paper . an approximate kurta condition was applied 基于creen公式和薄翼理论假设导出的升力面方法,采用在螺旋桨拱弧面上分布离散涡、源布置方法预报均匀流场中的螺旋桨的定常性能,螺旋桨尾涡面上压力连续性条件采用近似的kutta条件处理。 |
| 7. | The first two kinds of wavefunctions are simple formally , but there must be error of the numerical values of some physical magnitudes because there is a trouble with the continuity of the function and of its derivative divided by the band - mass at the boundaries . though the third kind of wavefunction can satisfy the continuity of the function and of its derivative divided by the band - mass , the number of the terms is so large that it is difficult to calculate the physical magnitudes in the single quantum wire 前两种波函数形式比较简单,但由于在边界处波函数的河北师范大学硕士学位论文连续性条件和粒子流的守恒条件存在问题,这必将对某些物理量的计算产生影响;第三种波函数在边界处满足波函数的连续性条件和粒子流的守恒条件,但是对于单量子线需要展开的项数很多,计算量太大。 |
| 8. | In 1985 , takeshi kodama et al . [ 12 ] expressed the wavefunction as the combination of the function of the single electron in a one - dimensional square well with the finite barrier to calculate the binding energies of the exciton . this form does n ' t satisfy the continuity of the function and of its derivative divided by the band - mass 1985年, takeshikodama等人在计算激子的束缚能时把单电子的波函数( x , y )取为一维有限深方形量子阱中波函数的乘积,这种取法在边界上不满足波函数的连续性条件及粒子流( 1 / m ~ * ) ' ( x , y )的守恒条件。 |
| 9. | [ 5 ] expressed the wavefunction in terms of a two - dimensional fourier series . this form can satisfy the continuity of the function and of its derivative divided by the band - mass . but the number of the terms is so large that it is difficult to calculate the physical magnitudes in the single quantum wire 1996年, s . gangopadhyay等人将波函数用二维傅立叶级数展开,这种取法满足波函数的连续性条件及粒子流( 1 / m ~ * ) ' ( x , y )的守恒条件,但是当考查单量子线时,需要展开的项数很多,计算量很大。 |
| 10. | This paper has studied the wavefunction expanded in terms of the two - dimensional harmonic oscillator eigenfunction through calculating the energy of the ground state , the energy of the first excited state and the oscillator strength in a square wire with finite barriers and studied its application in these fields . the most remarkable advantage of this wavefunction is that it can satisfy the continuity of the function and of its derivative divided by the band - mass and it is convenient to calculate some physical magnitudes because the number of the terms is small 本文通过计算有限深方形量子线中单电子的基态能、第一激发态能和振子强度研究了以二维谐振子本征函数为基展开的波函数以及它在这些问题中的应用,此波函数的显著优点是:在边界处满足波函数的连续性条件和粒子流的守恒条件,并且展开项数少,计算方便。 |