The flux through the wall of the vortex tube is zero by its definition.
根据涡管定义，穿过涡管管壁的涡量为零。
While vortex in the cross-section promotes the mixing of cold and hot air near the wall with an enhancement in heat transfer.
而横向截面的涡团则促进冷气与壁面热气的掺混，提升了换热效果。
Inner vortex speeding cyclone dust collector can increase the dust collecting rate, decrease system resistance and prevent dust from adhering on the wall.
内旋流加速旋风集尘器提高了粉尘率，减少了系统阻力，防止了粉尘粘壁。
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