A new dynamic equation of aerosol in air is derived, using a model-in-model, by equilibrium of buoyancy, gravity and pressure, together with conservation laws of mass, momentum and energy via Reynolds transport theore...A new dynamic equation of aerosol in air is derived, using a model-in-model, by equilibrium of buoyancy, gravity and pressure, together with conservation laws of mass, momentum and energy via Reynolds transport theorem and supplemented by corresponding scientific laws for related properties of air and aerosols. This new dynamic equation of aerosol in air is a set of non-linear partial differential equations involved six unknown functions of mass densities, pressure, air and aerosol speeds and temperature. It has features: 1, it belongs to certain type;2, it emphases the effect of buoyancy in equilibrium and potential energy, and the Archimedes principle of buoyancy is firstly extended to lateral directions based on logical deduction, the phenomenon of stirring a glass of oil-water mixture and the recorded of Hurricane Isabel (2003) from space station. The later shows the evidence of existence of lateral buoyancy;3, the mass densities of air and aerosol of a point in our model are varied in different directions due to traction and are treated as vectors, and they have been used in the calculation of lateral buoyancy.展开更多
目的:提出一种能精确模拟肺顺应性的模拟肺模型,并研究等温系统的测量方法。方法:模拟肺的主体为一个1000 m L的刚性密闭玻璃瓶,使用医用高精度针筒作为供气装置。玻璃瓶内部压强采用BMP085压强传感器以及ATmega32单片机对压强数据进行...目的:提出一种能精确模拟肺顺应性的模拟肺模型,并研究等温系统的测量方法。方法:模拟肺的主体为一个1000 m L的刚性密闭玻璃瓶,使用医用高精度针筒作为供气装置。玻璃瓶内部压强采用BMP085压强传感器以及ATmega32单片机对压强数据进行采集与分析,测得的数据在PC机上使用Lab VIEW进行显示和存储以备后续处理。实验测量不同质量铜丝填充后玻璃瓶的顺应性。结果:在容器为1000 m L的情况下,填充300 g铜丝可满足气体等温压缩的要求。最后得出1000 m L刚性玻璃瓶顺应性约为1.014 m L/mbar。结论:该模拟肺符合呼吸机通气性能测试和定标中对模拟肺的基本要求,能够用于呼吸机顺应性的参数精度测试。展开更多
文摘A new dynamic equation of aerosol in air is derived, using a model-in-model, by equilibrium of buoyancy, gravity and pressure, together with conservation laws of mass, momentum and energy via Reynolds transport theorem and supplemented by corresponding scientific laws for related properties of air and aerosols. This new dynamic equation of aerosol in air is a set of non-linear partial differential equations involved six unknown functions of mass densities, pressure, air and aerosol speeds and temperature. It has features: 1, it belongs to certain type;2, it emphases the effect of buoyancy in equilibrium and potential energy, and the Archimedes principle of buoyancy is firstly extended to lateral directions based on logical deduction, the phenomenon of stirring a glass of oil-water mixture and the recorded of Hurricane Isabel (2003) from space station. The later shows the evidence of existence of lateral buoyancy;3, the mass densities of air and aerosol of a point in our model are varied in different directions due to traction and are treated as vectors, and they have been used in the calculation of lateral buoyancy.
文摘目的:提出一种能精确模拟肺顺应性的模拟肺模型,并研究等温系统的测量方法。方法:模拟肺的主体为一个1000 m L的刚性密闭玻璃瓶,使用医用高精度针筒作为供气装置。玻璃瓶内部压强采用BMP085压强传感器以及ATmega32单片机对压强数据进行采集与分析,测得的数据在PC机上使用Lab VIEW进行显示和存储以备后续处理。实验测量不同质量铜丝填充后玻璃瓶的顺应性。结果:在容器为1000 m L的情况下,填充300 g铜丝可满足气体等温压缩的要求。最后得出1000 m L刚性玻璃瓶顺应性约为1.014 m L/mbar。结论:该模拟肺符合呼吸机通气性能测试和定标中对模拟肺的基本要求,能够用于呼吸机顺应性的参数精度测试。
