Analysis of Numerical Results in High Temperature Congealment and Chemistry Non-equilibrium Flow Field

Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved. In this paper, using internalequivalent heat area in place of electric are that created Ohm heat, the flow fields of thermodynamic equilibrium chemistry con-gealment and chemistry non-equilibrium in the plasma generator were simulated. The influences of the inlet prerotation angleof air, the inlet total pressure of air and the airflow compression angle of spray nozzle on the temperature on the surface of elec-

Heat Production Rate Calculation of Thermal Manikin with a Compensation Method

Thermal manikin plays important roles in simulating thethermal state of human bodies to facilitate the evaluationof thermal comfort properties of various clothing assem-blies.Based on the heat balance principle and analysis ofrelated factors,the heat production rate of manikin isrecommended as an efficient evaluation index.Whereas,its inside heat production which occurs as a result of theexistence of temperature difference between its insidepart and outside surface,should not be ignored.Through a series of theoretical analysis and calculations,a compensative equation is deduced in this paper.

中国煤矿安全事故损失计算模型研究

分析了煤矿安全事故处理过程中可能发生的各项经济损失,根据它们的特征和性质将其划分为直接价值因素损失、间接价值因素损失和非价值性因素损失3大类。引入伤害分级比例系数法进行事故人员伤亡价值损失的估算,有利于对伤亡矿工赔付额的界定。建立了煤矿事故损失计算模型,同时给出了各项费用的计算公式,并将该模型应用于我国辽宁孙家湾"2.14"煤矿事故的损失计算,对计算结果进行了分析,并进行经济损失程度分级。结果显示,模型计算得到损失大小和损失组成特点符合实际。

灾疫生命伦理研究的实践论视域

灾疫生命伦理研究就是对灾疫防治过程中所涌现出来的生命权利、尊严、救助、治疗、康复等问题予以系统的伦理检讨,为灾疫防治实践如何遵循生命本性而维护、弘扬生命并创造生命的自身价值和意义提供可行的伦理方案。为此,灾疫生命伦理研究应遵循一切生命的存在权利必须平等和完整之伦理准则,并以亲生命性和生命的非计算性为实践原则。灾疫前预防性治理实践,应以引导人人平等善待,人人学会敬畏、学会关爱、学会为重建生境而努力为根本任务;灾疫爆发后救助性治理实践,应以如何更人性、更有效地拯救生命为重心;灾疫后重建性治理实践,应以如何更卓有成效地使所有生命获得生理和心灵的康复为要务。

三排滚柱式回转支承疲劳寿命分析

三排滚柱式回转支承是回转支承中综合承载能力最好的一种,疲劳寿命是其研究的核心内容,研究疲劳寿命一方面为正确设计选择回转支承提供详实资料,充分发挥其功能,提高经济效益;另一方面,提高安全性和可靠性,避免重大事故发生。以三排滚柱式回转支承为研究对象,利用L-P理论进行疲劳寿命理论计算,建立三排滚柱式转盘轴承整体有限元模型,采用两根非线性弹簧模拟滚柱—滚道之间的接触行为得到滚道载荷分布,并与理论结果对比分析,验证有限元计算结果的可靠性。将有限元计算结果导入到Fe-safe疲劳分析软件进行疲劳寿命仿真计算,得到滚道最小安全系数和最少应力循环次数,通过误差分析验证疲劳仿真分析的可靠性。