Full
Outline
To achieve accurate measurement of residual propellant in on‑orbit satellites，based on thermal‑fluid‑structure coupling calculation method，numerical calculations were conducted on the transient flow and heat transfer characteristics of propellant during heat capacity measurement.The flow characteristics，temperature distribution，and heat flux distribution characteristics of propellant in the tank under different settling acceleration conditions were analyzed.By comparing real‑time temperature change data from simulation and experimental monitoring points，the accuracy of the numerical calculation model was verified.The results show that the sloshing frequency of liquid propellant in the tank increases with increasing settling acceleration.When settling acceleration increases from 0.066 5 m/s2 to 0.294 m/s2，the propellant sloshing frequency increases from 0.055 Hz to 0.116 Hz.The temperature change of fluid above the gas‑liquid interface is more significant compared to that below the interface.After continuously heating the tank surface at 180 W total power for 180 seconds，there exists a certain temperature difference between the outer wall of the tank and the fluid‑structure interface，with an average temperature difference of 0.12 K.The lower the monitoring point position，the slower the temperature rises.The main frequency of temperature change at monitoring points inside the tank is consistent with the variation in liquid propellant sloshing frequency.The research results can provide references for the measurement of residual propellant quantity in on‑orbit satellites.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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