Cranfield University at Silsoe (1975-2008)

Permanent URI for this community

https://dspace.lib.cranfield.ac.uk/handle/1826/6

Browse

Browsing Cranfield University at Silsoe (1975-2008) by Supervisor "Baker, R. C."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    ItemOpen Access
    Flow in a forward swept centrifugal fan
    (Cranfield University, 1988-03) Mealing, B. E.; Baker, R. C.
    The original objective of this work, to improve the efficiency of a forward curved centrifugal fan, was redirected to the urgent solution of a serious impeller life problem arising under certain service conditions. Using a variety of experimental and theoretical techniques the flow pattern within the blade passage was analysed and the cause of the problem diagnosed. A new impeller has been designed and has been found to solve the service life problem while also yielding an improvement in efficiency. Because the project was carried out under the Total Technology programme the scope was widened to include consideration of the fan application in a suction roadsweeper : as a result of the wider technical and commercial investigation an opportunity has been identified for a new product offering benefits much greater than those sought within the scope of the original objective.
  • No Thumbnail Available
    ItemOpen Access
    The prediction of droplet motion and breakup using a vortex model for turbulent flows
    (Cranfield University, 1988-07) Hayes, E. R; Baker, R. C.
    This document describes the development of a computational model to study the movement and breakup _of droplets in turbulent two-component flows. The aim is to produce a suitable model which will be economical of computing resources and practical for engineering applications. The application of particular interest here is that of water droplets in fully developed turbulent pipe flows of oil. The computational method uses Vortex filaments to produce, in a novel way, instantaneous fluctuating velocities within the flow domain. The trajectory of a particle within this field is predicted by integrating the theoretical law of motion for the particle. In addition, the breakup of a fluid particle in the turbulent field may be predicted using an empirical criterion formulated using data obtained from a series of experiments. The tests were designed to study the deformation and breakup of a single water droplet in oil subjected to shear. Wherever possible the results of each development stage of the model were compared with work published in the literature.