A sprue is 250 mm long. The velocity of the molten metal at the top of the sprue is 0.15 m/s. The middle diameter of the sprue is 10 mm. The total cavity of the "runner system + mold" is 2.5 x 10° mm. The viscosity of the molten metal is 0.0022 kg/(m· s) and the density is 2700 kg/m³. According to given information i. For a proper sprue design, calculate the bottom diameter of the sprue ii. Find the velocity at the bottom of the sprue iii. Find the volumetric and mass flow rates at the bottom of the sprue iv. Find the required time to fill the mold completely Is the flow laminar, mixed or turbulent at the bottom of the sprue? V. P h+ pg ' 2g v? = constant Q = A, V = A2V2 h2 A1 h A2 pVD Re TST = Cm %3D

A sprue is 250 mm long. The velocity of the molten metal at the top of the sprue is 0.15 m/s. The middle diameter of the sprue is 10 mm. The total cavity of the "runner system + mold" is 2.5 x 10° mm. The viscosity of the molten metal is 0.0022 kg/(m· s) and the density is 2700 kg/m³. According to given information i. For a proper sprue design, calculate the bottom diameter of the sprue ii. Find the velocity at the bottom of the sprue iii. Find the volumetric and mass flow rates at the bottom of the sprue iv. Find the required time to fill the mold completely Is the flow laminar, mixed or turbulent at the bottom of the sprue? V. P h+ pg ' 2g v? = constant Q = A, V = A2V2 h2 A1 h A2 pVD Re TST = Cm %3D

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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