Relaminarising pipe flow by wall movement

Wall corrections in modeling rotating pipe flow

Monitoring Pipe-Wall Corrosion Rate by Ultrasonic Technique

thickness and corrosion/erosion rate. In this thesis, a combination of signal processing techniques are used to estimate the corrosion rate estimates based on MBE. Corrosion rate is estimated based on ultrasonic pipe wall thickness data is collected over a short period of time using MBE model. This technique is based on data collected from the speedometer applied for thinning and both indicate ...

Optimizing naturally driven air flow in a vertical pipe by changing the intensity and location of the wall heat flux

Heat transfer from the internal surfaces of a vertical pipe to the adjacent air gives rise to the air flow establishment within the pipe. With the aim of optimizing the convective air flow rate in a vertical pipe, the details of the flow and thermal fields were investigated in the present study. Conservation equations of mass, momentum, and energy were solved numerically using simple implicit f...

Optimal Mixing by Feedback in Pipe Flow

We design a Lyapunov based boundary feedback controller for achieving mixing in a D pipe ow governed by Navier Stokes equations We show that the control law maximizes a measure of mixing that incorporates stretching and folding of material elements while at the same time minimi zing the control e ort and the sensing e ort The penalty on sensing results in a static output feedback control law ra...

A Study of Flow and Mixing in Bubbly Gas-Liquid Pipe Flow Generated by a Grid

The spreading of a tracer in a bubbly two-phase grid-generated turbulent flow system is studied. In this work both particle image velocimetry (PIV) and planer laser-induced <span style="font-size: 10pt...