Question

Which of the following flows is responsible for too less pouring time of molten metal in the mould?

(a) Laminar flow

(b) Viscous flow

(c) Turbulent flow

(d) Irrotational flow

This question was addressed to me in class test.

I'd like to ask this question from Gating Design topic in division Pattern and Mould, Principles of Gating & Risering of Casting-Forming-Welding I

Answer 1

Right choice is (c) Turbulent flow

Easiest explanation: Too less pouring time is caused by turbulent flow of nature of the molten metal. The mixing and collisions of molecules make the change in momentum and molecules get accelerated and hence high velocity, that cause the less pouring time of molten metal in the mould.