A group of liquid simulants was developed in order to ease the process of cold-flow testing by lowering associated costs and hazards while providing accurate analysis of desired liquid behavior through an injector. Simulants were made with the intention of modeling certain physical properties of the liquid such as density, viscosity, and surface tension. These simulant solutions are capable of modeling liquid propellants throughout large physical property ranges by simply modifying the ingredient ratios. The effectiveness of these solutions in simulating their intended liquids was measured by performing various density, viscosity, and surface tension experiments along with cold-flow tests comparing the liquid breakup and pressure drops across the injector as a function of Reynolds number, Weber number, Ohnesorge number, and mass flow rate. The experimental tests proved that the simulants tested accurately demonstrated desired liquid density, viscosity, and surface tension values and were more effective at modeling jet breakup and pressure drop behavior of specific propellants than that of traditional cold-flow experiments using de-ionized liquid water, with little-to-no added maintenance or cleanup.

开发了一组液体模拟物，以通过降低相关成本和危害来简化冷流测试过程，同时通过注射器提供所需液体行为的准确分析。为了模拟液体的某些物理性质，例如密度，粘度和表面张力，而制备模拟物。这些模拟解决方案能够通过简单地修改成分比率，在较大的物理性能范围内对液体推进剂进行建模。通过执行各种密度，粘度和表面张力实验以及冷流测试（比较雷诺数，韦伯数，Ohnesorge的函数）比较了整个注射器上的液体破裂和压降，通过测量各种溶液，密度和表面张力实验以及冷流测试，来测量这些溶液模拟其预期液体的有效性。数量和质量流量。