加氢装置是炼化企业典型的高危装置,涉及氢气等易燃易爆介质,安全风险较高。为研究加氢装置在开敞空间条件下氢气泄漏爆炸事故火焰及冲击波时空演化过程,基于FLACS三维模拟软件对某企业加氢装置建立了等比例模型,并对其进行氢气爆炸模...加氢装置是炼化企业典型的高危装置,涉及氢气等易燃易爆介质,安全风险较高。为研究加氢装置在开敞空间条件下氢气泄漏爆炸事故火焰及冲击波时空演化过程,基于FLACS三维模拟软件对某企业加氢装置建立了等比例模型,并对其进行氢气爆炸模拟研究,探究了不同当量比(ER)对氢气云燃爆超压值及温度的影响。研究结果表明,当量比(ER)在0.8~1.4范围内时,氢气爆炸的温度、超压峰值P max均随ER的增大呈先增大后减小的趋势,ER为1.05时,爆炸温度峰值及超压峰值最大,高温火焰传播范围半径约35 m,影响面积达到3800 m 2。此外,模拟结果为类似场景建筑物抗爆工程改造提供了理论指导。展开更多
A new method of single sample polarization filtering is proposed. The algorithm is fast and suitable for the polarization processing of stationary or nonstationary polarized disturbed signals with one or more independ...A new method of single sample polarization filtering is proposed. The algorithm is fast and suitable for the polarization processing of stationary or nonstationary polarized disturbed signals with one or more independent disturbances. A ground wave polarimetric radar with the ability of radio disturbance suppression is then introduced. Some numerical results demonstrate the effectiveness of single sample polarization filtering method for ground wave polarimetric radar.展开更多
文摘加氢装置是炼化企业典型的高危装置,涉及氢气等易燃易爆介质,安全风险较高。为研究加氢装置在开敞空间条件下氢气泄漏爆炸事故火焰及冲击波时空演化过程,基于FLACS三维模拟软件对某企业加氢装置建立了等比例模型,并对其进行氢气爆炸模拟研究,探究了不同当量比(ER)对氢气云燃爆超压值及温度的影响。研究结果表明,当量比(ER)在0.8~1.4范围内时,氢气爆炸的温度、超压峰值P max均随ER的增大呈先增大后减小的趋势,ER为1.05时,爆炸温度峰值及超压峰值最大,高温火焰传播范围半径约35 m,影响面积达到3800 m 2。此外,模拟结果为类似场景建筑物抗爆工程改造提供了理论指导。
文摘A new method of single sample polarization filtering is proposed. The algorithm is fast and suitable for the polarization processing of stationary or nonstationary polarized disturbed signals with one or more independent disturbances. A ground wave polarimetric radar with the ability of radio disturbance suppression is then introduced. Some numerical results demonstrate the effectiveness of single sample polarization filtering method for ground wave polarimetric radar.