ASME Journal of Fluids Engineering 1 Numerical investigation of the three-dimensional pressure distribution in Taylor Couette flow David Shina Adebayo University of Leicester Department of Engineering, University Road, Leicester, LE1 7RH, U.K. dsa5@le.ac.uk Aldo Rona University of Leicester Department of Engineering, University Road, Leicester, LE1 7RH, U.K. ar45@le.ac.uk ABSTRACT An investigation is conducted on the flow in a moderately wide gap between an inner rotating shaft and an outer coaxial fixed tube, with stationary end-walls, by three dimensional Reynolds Averaged Navier-Stokes (RANS) Computational Fluid Dynamics, using the realizable − model. This approach provides three-dimensional spatial distributions of static and of dynamic pressure that are not directly measurable in experiment by conventional non-intrusive optics-based techniques. The non-uniform pressure main features on the axial and meridional planes appear to be driven by the radial momentum equilibrium of the flow, which is characterized by axisymmetric Taylor vortices over the Taylor number range 2.35 × 10 6 ≤  ≤ 6.47 × 10 6 . Regularly spaced static and dynamic pressure maxima on the stationary cylinder wall follow the axial stacking of the Taylor vortices and line up with the vortex induced radial outflow documented in previous work. This new detailed understanding has potential for application to the design of a vertical turbine pump head. Aligning the location where the gauge static pressure maximum occurs with the central axis of the delivery