冷却剂

The primary circuit is a close circuit that pressurize water whose function is to extract heat from the nuclear reactor.

主回路是一个对冷却剂加压的封闭回路。冷却剂的作用是带出反应堆内的热量。

In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.

为了解层板再生冷却推力室在传热上的基本特征，第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题，建立了层板再生冷却推力室二维流固耦合传热过程的数理模型，采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题，从而避免了流-固区域之间的反复迭代，大大缩短了计算时间。

Through this material one could setup an overall impression of the study content and the study method.In order to investigate the basic heat transfer characteristics of regeneratively cooled scramjet, in the second chapter, one dimensional heat transfer model of regeneratively cooled scramjet was developed. In this model, N-R correlations were used to describe hot gas-side and coolant-side convection heat transfer. Simple model of gas properties was also used.

为了初步了解超燃冲压发动机再生冷却传热的基本特征，第二章建立了超燃冲压发动机再生冷却的一维传热数理模型，采用了准则关系式描述燃气侧和冷却剂侧的对流换热，采用了简化的燃气物性模型，并对衬层材料、衬层厚度和冷却剂流量进行了参数研究。

The properties of the combustion products have a significant effect on the heat transfer rates on the hot gas side and the properties of the coolant have a significant effect on the coolant side film coefficient.

性能燃烧的产品有重大影响的传热速率对热气体方面和性能的冷却剂有重大影响冷却剂膜侧系数。

Zirconia/graphite compound mold core was prepared by the coating, in which the silicon sol was used as binder and zirconia was used as refractory materials. The application feasibility of metal particles as a coolant in the solidification process was studied, and the application of metal particles as subsidiary coolant in the liquid metal cooling of directional solidification were analyzed and studied in this investigation. The conclusions can be drawn as follows: 1 The zireonia/graphite compound cores fabricated by brushing coating which was prepared by making silicon sol agglutinated zirconia as a refractory material were casteded at 800℃and 1000℃respectively, and the results show that the strength of the mold core is strong enough to meet the requirement of practical casting.

本文研究了以硅溶胶为粘结剂，氧化锆为耐火材料来制备氧化锆／石墨复合型芯的制备工艺；并分析了金属颗粒作为冷却剂在金属凝固过程中应用的可行性、金属颗粒的冷却能力以及金属颗粒作为辅助冷却剂在定向凝固的液态金属冷却法中的应用，得出以下结论：(1)以硅溶胶为粘结剂，氧化锆为耐火材料来配制涂料，采用刷涂石墨型芯的方法来制备的氧化锆／石墨复合型芯经800℃和1000℃实际浇铸实验，结果证明型芯的强度足够满足实际浇铸要求。

The results show that at sea level, coolant flow rate affects the plug pressure, heat flux and temperature; at design operating condition, coolant flow rate has no effect on pressure and heat flux on the plug wall. With the same coolant flow rate, plug temperature at sea level is higher than that at design operating condition; under the same operating condition, ramp temperature is higher than the plug base temperature.

计算结果表明：地面工况下，冷却剂流量的改变对塞锥和塞锥底部壁面的压强、热流密度和温度的影响较大，高空环境下，冷却剂流量的改变对塞锥和塞锥底部壁面的压强、热流密度的影响较小；在冷却剂流量相同的情况下，塞锥和塞锥底部在地面工况下的壁面温度要远高于在高空环境下的温度；在相同工况和相同冷却剂流量的情况下，塞锥壁面上的温度要远高于塞锥底部壁面上的温度。

Tip: Emergency Coolant is not recycled like the other coolants and your supply is limited.

提示：事故冷却剂不象其他冷却剂一样能够被回收利用，因此，你不能无限量使用。

The overpressure transients of the most penalizing category 2 condition and category 3 condition are simulated by the thermal-hydraulic code-CATIA 2, and the reactor coolant system overpressure protection under the stretch-out operation for LING AO NNP is validated.

本文阐述岭澳核电站延伸运行工况下反应堆冷却剂系统超压保护分析的原理和方法，利用热工水力程序CATIA2对最为严重的二类工况和三类工况超压瞬变做了分析和计算，计算表明岭澳核电站延伸运行期间冷却剂系统超压保护是有效的。

For a regenerative cooling system, the coolant supply pressure must be sufficient to flow the coolant through the narrow cooling passages at high velocities.

为蓄热式冷却系统，冷却液供应的压力，必须有足够的流动冷却剂通过狭窄的通道，在冷却速度高。

The study shows that regenerative cooling can meet the airframe/engine integrated cooling requirements in the range of flight Mach numbers from 6 to 12, as fuel injection concept (injector locations and injection fuel mass flow) is set properly, and hydrogen temperature at the exit of cooling passage is allowed to be a relative higher value.

研究表明，在马赫数6～12的范围内，通过适当配置燃料喷射方案和提高冷却通道出口冷却剂的温度，采用再生冷却方式能够满足机体／发动机一体化高超声速飞行器的冷却需求。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。