Laminar Flow in a Helically Coiled Pipe

Helically Coiled Heat Exchangers

Entropy Generation in Laminar Fluid Flow through a Circular Pipe

A numerical solution to the entropy generation in a circular pipe is made. Radial and axial variations are considered. Navier-Stokes equations in cylindrical coordinates are used to solve the velocity and temperature fields. Uniform wall heat flux is considered as the thermal boundary condition. The distribution of the entropy generation rate is investigated throughout the volume of the fluid a...

Laminar Flow Heat Transfer of a Pseudoplastic Fluid through a Double Pipe Heat Exchanger

An experimental study was carried out to obtain the mean convective heat transfer coefficient of aqueous carboximethyl cellulose (CMC) solutions in double-pipe heat <span style="font-size: 10pt; color:...

Distinct large-scale turbulent-laminar states in transitional pipe flow.

When fluid flows through a channel, pipe, or duct, there are two basic forms of motion: smooth laminar motion and complex turbulent motion. The discontinuous transition between these states is a fundamental problem that has been studied for more than 100 yr. What has received far less attention is the large-scale nature of the turbulent flows near transition once they are established. We have c...

Mechanical Resonances of Helically Coiled Carbon Nanowires

Despite their wide spread applications, the mechanical behavior of helically coiled structures has evaded an accurate understanding at any length scale (nano to macro) mainly due to their geometrical complexity. The advent of helically coiled micro/nanoscale structures in nano-robotics, nano-inductors, and impact protection coatings has necessitated the development of new methodologies for dete...