Open Water Test Series with Modern Five-Bladed Propeller Models

Numerical simulation of turbulent flow around the dtmb4119 propeller in open water conditions

In this study, ANSYS-FLUENT packages are employed to simulate the turbulent flow around DTMB4119 propeller in open water conditions. In order to form a mesh, the multiple reference frame (MRF) methodology is used. The results are compared with the experimental results and a good conformity is obtained, which endorses numerical simulation. Furthermore, the  turbulence model is used, which is sup...

The Flow Field of an Infinitely Bladed Propeller with Radially Non-uniform Loading

The flow field of an infinitely bladed propeller of disk loading proportional to (r/R) • (l-r/R) in an incompressible, inviscid fluid is expressed in terms of a series of Legendre functions. Numerical calculations have been carried out for the case n = 5« The radial velocity at r = R, and the shape of the stream surface passing through the periphery of the propeller disk are determined and comp...

Correction: The Carboxy-Terminal Domain of Erb1 Is a Seven-Bladed ß-Propeller that Binds RNA

The Carboxy-Terminal Domain of Erb1 Is a Seven-Bladed ß-Propeller that Binds RNA

Erb1 (Eukaryotic Ribosome Biogenesis 1) protein is essential for the maturation of the ribosomal 60S subunit. Functional studies in yeast and mammalian cells showed that altogether with Nop7 and Ytm1 it forms a stable subcomplex called PeBoW that is crucial for a correct rRNA processing. The exact function of the protein within the process remains unknown. The N-terminal region of the protein i...

Open water scuba diving accidents at Leicester: five years' experience.

OBJECTIVES The aim of this study was to determine the incidence, type, outcome, and possible risk factors of diving accidents in each year of a five year period presenting from one dive centre to a large teaching hospital accident and emergency (A&E) department. METHODS All patients included in this study presented to the A&E department at a local teaching hospital in close proximity to the l...