Modelling of air flow rate in significantly flattened rounded rectangular ventilation ducts

Air flow in snake ventilation.

Ventilation in resting, unrestrained Boa constrictor, Python regius and Thanmophis s. sirtalis was monitored using various combinations of a closed Kopfkappe (head chamber), intratracheal pressure catheters, strain gauges around the trunk, and a flow meter connected to one of the nostrils. Records of intratracheal pressure with and without closing the Kopfkappe show that the latter device induc...

The Solution of Three Dimensional Incompressible Potential Flow Through Rectangular Ducts

The Solution of Three Dimensional Incompressible Potential Flow Through Rectangular Ducts

Average Heat Transfer Coefficient in Rectangular Ducts with Baffle Blockages

An experimental investigation was conducted to study the average and the fully-developed heat (mass) transfer coefficients in a rectangular smooth duct and a duct with repeated-baffle blockages. The focus of attention in this work is the conventional correlation Nu / Nufd 1 + C / ( X / D ) for the average heat transfer coefficient. It was shown that for relatively short ducts, the coefficient C...

Influence of Viscosity Function Simplification on Non·newtonian Velocity and Shear-rate Profiles in Rectangular Ducts

The velocity, shear-rate, variable viscosity, and variable power-law index profiles are calculated for non-Newtonian fluids using the finite difference method. The calculations are carried out for an actual viscosity function obtained by a cilrve fit through measured data and for the corresponding power law model, the simplest and most often used form for non­ Newtonian viscosity function appro...