無旋向量場 的英文怎麼說
中文拼音 [wúxuánxiàngliángchǎng]
無旋向量場
英文
irrotational vector field-
These results indicate that the magnetic field should have upper stability when the particle beam is low polarized while the requirement of the stability of the magnetic field can be lowered when the particle beam is high polarized in the experiment of producing the polarization of the particle beam. and the complementariness can be used as a negative feedback to stabilize the polarization of particle
這一結果表明，在產生離子束極化的實驗中，在離子束低度極化的前期階段，磁場應具有較高的穩定性，而在離子束極化度較高的後期階段，磁場的穩定性要求可以放鬆；自旋的縱向分量的無規漲落和橫向分量的無規漲落的互補性有可能用來做成穩定離子極化的負反饋。At the same time, on the basis of above results, the stability problem of the polarization of particle self - spin is discussed in irregular magnetic field of accelerator. the discovery that the low degree polarization system is very sensitive to the irregular magnetic field while the high degree polarization system is very stable is found. the irregular fluctuation of the vertical ponderance is complementary to that of the horizontal ponderance due to the self - spin conservation
同時，在此基礎上，利用su （ 2 ）代數動力學方程研究了加速器中帶自旋離子的極化對磁場的含時無規擾動的穩定性問題，發現：低度極化的系統對磁場無規擾動十分敏感，而高度極化的系統對磁場無規擾動十分穩定；自旋守恆導致自旋的縱向分量的無規漲落和橫向分量的無規漲落存在著互補性。The main contributions of this work are included as follows : ( 1 ) numerical tests of the outside axial and helical flows were carried out respectively. the velocities and pressure profiles and shear distributions have been obtained and they were compared due to the different flow field. it is concluded that when no particles are deposited, the helical flow would lower the pressure on membrane surface to some little extent but not markedly
（ 1 ）對外軸向流和外切向流兩種方式下膜器環隙內流場進行變參數數值實驗，作出流場及切應力的分佈規律，分析無顆粒沉積時層流條件下流動結構對過濾通量的影響，認為：採用外旋流的方式將對膜面壓力有削弱作用，但並不明顯。
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