Method of Obtaining Cooling Heat Flux on Surface of Melting Pool Based on Measurement Data
A heat flux density and surface cooling technology, applied in complex mathematical operations, greenhouse gas reduction, climate sustainability, etc., can solve problems such as concrete foundation melt-through, threats to human living environment, containment failure, etc.
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Embodiment 1
[0048] The method for obtaining the cooling heat flux on the surface of the melting pool based on the measurement data, the specific steps are as follows:
[0049] Step 1, the oxide crucible containing the molten material is designed to be slender, and the heat dissipation requirement of the insulation layer is less than 5%×q min ×A, qmin is the minimum heat flux, and A is the upper surface area of the melting pool. For example, the melting pool container adopts an oxide crucible with a thicker wall, and at the same time wraps the insulating material outside the oxide crucible, so the heat dissipation on the wall of the melting pool container can be ignored.
[0050] Step 2, first insert the temperature measuring device into different heights of the melting pool, then inject water into the surface of the melting pool to cool, and record the temperature of the melt at different positions through the data acquisition system during the entire cooling process.
[0051] Specificall...
Embodiment 2
[0063] This embodiment uses 3 temperature measuring devices as an example to describe the specific implementation in detail:
[0064] 1. Experiment preparation:
[0065] like figure 1 As shown, the high-temperature liquid melting pool 4 is placed in an oxide crucible 5 of equal cross-section, and the outer periphery of the oxide crucible 5 is wrapped with an insulating material to form an insulating layer 6 to reduce the circumferential heat dissipation of the melt as much as possible. The heat dissipation of the insulation layer 6 is less than 5%×q min ×A,q min is the minimum heat flux, and A is the upper surface area of the melting pool 4 . q min The calculation expression of is:
[0066]
[0067] In formula (3), ρ g is the density of water vapor, ρ f is the density of water, σ is the surface tension, h fg is the latent heat of vaporization, and g is the acceleration due to gravity. In order to achieve a better heat preservation effect, the oxide crucible 5 ado...
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