The performance of airflow level posture sensor two-wire structure and three-wire structure was compared and re-searched in this paper.By using FLUENT-CFD software,through modeling,meshing,solution and other methods, the airflow level posture sensor of two-wire structure and three-wire structure were simulated in the sensitive of the velocity field of different tilt an-gles and different heat source temperatures.The results showed that the tilt sensitivity to changes of velocity of three-wire structure airflow level posture sensor is 0.383 1×10-3 m/(s? °),and the two-wire structure is 0.248 7×10-3 m/(s? °),and the measure-ment range of three-wire structure airflow level posture sensor is 0°to 30°,the twow-ire structure is 0°to 20°.The rate of change of three-wire structure airflow level posture sensor's sensitive internal velocity difference vibration with the hot source temperature is 0.89×10-5 m/(s? ℃),and the two-wire is 7.5×105-m/(s? ℃).The performance of three-wire structure airflow level posture sensor is better than the two-wire structure's at inclination and temperature.
airflow level posture sensorsensitivitytilttemperature of hot source
NETL
NSTL
万方数据
维普
