【摘要】 采用短脉冲激光加热浸没在丙酮液体里的钥薄膜电阻，并结合数值模拟计算，研究了高温升率条件下丙酮液体温度场随时间的变化规律及汽泡行为，得到丙酮液池温度过界层的数量级大约为３０～４０μｍ。认为薄汽膜的形成和热边界层外移是激光脉冲过后很长一段时间内汽泡依然长大的主要原因，确定了铂薄膜电阻的激光反射损失。更多还原

【Abstract】 Extremely small platinum film that is immersed in acetone pool is heated by short pulsed laser. Acetone temperature variations and its boiling bubble behavior are studied experimentally and by two - dimensional heat conduction numerical simulation. It shows that the thermal boundary layer in acetone is an order of 30 ~ 40μm, and the formation of vapor and thermal boundary layer being thicker are the main reasons that vapor bubble still grows up long after laser pulse shorts. Laser reflection loss by platinum film is calculated.更多还原