Normally, coefficient of convective heat transfer is gotten through experiments which is heating testing tube by electricity and computed through Newton cooling law.

The epidural space puncture testing tube is characterized by being similar to the common syringe in structure and comprising a syringe tube, a piston, a gasket, a spring and a hand-held handle.

I plan to build a plywood triangle version similar to the plywood bike for testing "seat-head" tube angles and wheel base changes.