Abstract
Fermentation techniques are applied for the biotechnology and are widely used for food manufacturing, materials processing, chemical reaction, and so forth. Different fluids and types of blades in the tank for fermentation cause distinct flow and stress field distributions on the surface between fluid and blade and various flow reactions in the tank appear. This paper is mainly focused on the analysis of flow field with different fluid viscosities and also studied the stress field acting on the blades with different scales and shapes of them under specific rotational speed. The results show that the viscosity of fluid influences the flow field and stress distributions on the blades. The maximum stress that acts on the blade is increased with the increasing of viscosity. On the other hand, the ratio of blade length to width influences stress distributions on the blade. At the same time, the inclined angle of blade is also the key parameter for the consideration of design and appropriate inclined angle of blade will decrease the maximum stress. The results provide effective means of gaining insights into the flow and stress distribution of fermentation process.
Highlights
Study of fermentation system [1] is used for the development of biotechnology and applied for the way of cultivating and producing acetone by tanks
The viscosity of fluid influences the stress acting on the blade and the larger of viscosity causes the greater stress
As the inclined angle of blade is increased to 30∘ and 45∘, the stress distribution exists in two different areas including positive and negative stress areas shown in Figures 13(b) and 13(c)
Summary
Study of fermentation system [1] is used for the development of biotechnology and applied for the way of cultivating and producing acetone by tanks. 1.5 the act of fermenting throughout the manufacturing process [4]; if it fails during the manufacturing process, the products will end up being unsatisfactory, discordant in quality, or unbalanced in constituents, which will not match up with our expectation. It is necessary for fermenting tank throughout the process considering convectional circulation, and diffusion [5, 6]. The analysis of blades, rotational speed, and the viscosity of fluid flow for flow and stress field will have different influences on different fermenting processes as well
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