【作者】 丁昌江；

【导师】 梁运章；

【作者基本信息】 内蒙古大学 ， 生物物理学， 2004， 硕士

【摘要】 本文首先介绍了静电学基础理论的创立、现代静电工程学的发展及应用，并特别指出电流体动力学(EHD)已成其一个重要分支，成为现代静电工程学的研究热点。然后对电流体动力学作了简介。 接着介绍了几项有关电场对生物物料中水分子输运特性的试验，即高压电场解冻试验、电渗透脱水试验和液体物料在高压电场中的浓缩试验、作物种子在高压电场中的干燥试验及中药材(化橘红)在高压电场中的干燥试验。结果表明：各项试验都是电场力促使物料中的水分子运动速度加快，提高生物物料中有效成分的保留，均得到了具有重要意义的结果。 最后对以上各项试验从不同角度进行了机理探讨。认为是电场力对生物物料中的极性水分子具有牵引作用，电场中的载能离子注入生物物料，把能量传给水分子，加速水分子团的破裂，提高脱水或解冻。从电流体动力学的观点看，主要是由于电渗透产生的“电动泵”作用和介电液体内部的电场和力的作用来加速物料脱水或解冻。另外还对作物种子的高压电场干燥建立了数学模型。整个脱水或解冻过程中，“电场能传质”无传热过程，物料不会升温是最大限度的保留有效成分的主要原因。 高压电场干燥、高压电场解冻和电渗透脱水都是新型技术，将会在静电应用方面掀开崭新的一面。作者通过机理分析，用电流体动力学的基本理论给出解内蒙古大学硕士毕业论文释。更多还原

【Abstract】 In the first place, the foundation of the electrostatics basic theory, development and appliance of modern electrostatic engineering are introduced in the paper. And it points out that electrohydrodynamics(EHD) is a signified offshoot and investigated hotspot of modern electrostatic engineering. The EHD’s brief introduction is studied.In the second place, some experiments of transport character of water molecule on electric field in bio-materials, which are the thawing experiments on high voltage electric field, the electroosmotic dewatering experiments and the concentration experiments of liquid materials on high voltage field, the drying experiments of crop seeds on high voltage electric field, the drying experiments of Chinese traditional medicine (Huajuhong) on high voltage electric field, are performed. The results show that the water molecule velocity in materials is accelerated, the reminded efficient ingredients is enhanced on electric field. The experimental results are of significance.At last, the experimental mechanism are done from vary point of view. It is thought that the electric force tows polarity water molecules in bio-materials, the ions carried energy enter into bio-materials and acts with the water molecules, and gradually transfers kinetic energy to water molecules. The process changes the water groups into single water molecule, and enhances dewatering and thawing. As far as EHD is concerned, the dewatering and thawing of materials are accelerated because of ’electromotion pump’ as a result of electroosmosis, electric field and force in dielectric liquid. The mathematical model of crop seeds by high electric drying is set up. Duringthe dewatering and thawing, the efficient ingredients are more kept down because it has not a heat transfer process in the energy and mass transfer of the electric field process and the temperature of materials does not rise.High electric drying, high electric thawing and electroosmosis dewatering technology are novel technology, and will initiate new domain in electrostatic application. The mechanism is studied from the electrohydrodynamics(EHD).更多还原