MARIC lectures on the rational theory of ship hull-propeller interaction and its applications PDF Download
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Author: Michael Schmiechen
Publisher:
ISBN:
Category :
Languages : de
Pages : 220
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Author: Michael Schmiechen
Publisher:
ISBN:
Category :
Languages : de
Pages : 220
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Book Description
Author: Michael Schmiechen
Publisher: BoD – Books on Demand
ISBN: 3837053091
Category :
Languages : en
Pages : 490
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Book Description
PROBLEM. The treatise is devoted to the reconstruction of our 'instinctive beliefs' in classical mechanics and to present them 'as much isolated and as free from irrelevant additions as possible'. The same motivation has driven many authors since the publication of Newton's Principia. IMPORTANCE. Classical mechanics will remain the basic reference and tool for mechanics on terrestrial and planetary scale as well as the proto-theory of relativistic and quantum mechanics. But it can only serve its purpose if it is not considered as obsolete, but if its foundations and implications are understood and made 'absolutely' clear. METHOD. Based on the 'instinctive belief' that the foundations of classical mechanics cannot be found and reconstructed within mechanics itself but only 'outside', classical mechanics is 'understood' by embedding it into an adequate theory of knowledge and adequate proto- and meta-theories in terms of the 'language of dynamics'. Evidence is produced that available philosophical expositions are not adequate for the purpose at hand. Mechanics is treated as part of physics, not of mathematics. Not sophisticated mathematical artifacts, necessary for solving specific problems, but the intellectually satisfactory foundation of mechanics in general is subject and purpose of the exercise. The goal is reached using axiomatic systems as models. SCOPE. Following an account of the unsatisfactory state of affairs the treatise covers the epistemological foundations, abstract proto-mechanics, i. e. the theories of time and space, meta-mechanics, i. e. the theories of state space models and of quantities proper, and, as an instance of the latter, abstract elementary mechanics, the theory of translational motions of 'small' solid bodies in three-dimensional Euclidean space, including classical general relativity. Subsequently the theory of classical kinematics is developed as basis for interpreted proto-mechanics and interpreted elementary mechanics. As an amus
Author: Michael Schmiechen
Publisher:
ISBN:
Category : Hulls (Naval architecture)
Languages : en
Pages :
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Author: Aditya Kolakoti
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659672798
Category :
Languages : en
Pages : 132
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Book Description
For moving ahead ship needs thrust, which is generated by rotating propeller behind its hull. Propellers are used to generate thrust to propel marine vehicles. Propeller generates thrust by virtue of the pressure difference between two surfaces of the propeller blade, called face and back. The incident angle of the flow plays a major role in generating this pressure difference over every blade section (which is an aerofoil section in general). A controllable pitch propeller can adjust incidence of incoming flow and can offer better control over the thrust generated by it.Traditionally thrust and torque of a propeller, is predicted by model test. This takes more time, manpower, space and cost. In present time CFD is getting popular for hydrodynamic designs as it give relative saving in time, manpower, space and cost
Author: John P. Breslin
Publisher: Cambridge University Press
ISBN: 9780521574709
Category : Science
Languages : en
Pages : 588
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Book Description
Technical introduction to ship propeller hydrodynamics, for researchers in ocean technology, naval architecture, mechanical engineering.
Author: University of Michigan. College of Engineering
Publisher: UM Libraries
ISBN:
Category : Engineering schools
Languages : en
Pages : 1094
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Author: University of Michigan
Publisher: UM Libraries
ISBN:
Category : Education, Higher
Languages : en
Pages : 1202
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Book Description
Each number is the catalogue of a specific school or college of the University.
Author: Horst Nowacki
Publisher:
ISBN:
Category : Hull-Propeller interaction
Languages : en
Pages : 118
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Book Description
The quantitative role of wavemaking at the free surface in the phenomenon of hull propeller interaction is investigated by means of a general scheme devised to determine the potential, viscous and wave components of wake and thrust deduction. It requires the concerted application of various analytical tools such as the lifting line theory of propellers, the method of singularities for representing the hull and propeller by source distributions and the linearized free-surface theory of wavemaking, as well as model experiment techniques such as the conventional Froude analysis of propulsion factors, nominal wake measurements and wave profile measurements. The procedure is applied to the specific case of a thin mathematical hull form driven by a four-bladed propeller of simple geometry.
Author: William S. Vorus
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 186
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Book Description
A method is developed for predicting propeller-generated hull surface forces which cause a ship to vibrate. The method applies specifically for vertical, athwartship, axial, or torsional steady-state vibration of the hull girder. The exciting forces are made available as generalized forces effective in exciting the normal modes of the hull free vibration. The free vibration characteristics are assumed to be known in advance. The formula by which the generalized forces can be calculated is derived using potential flow theory. The basic ingredient in the derivation is a theorem which permits the problem to be solved without need for the solution of a hull-propeller interaction boundary value problem. To use the method one must have available: data pertaining to the hull and propeller design, the hull normal mode shapes, an estimate of the propeller blade loading distribution, and the fluid velocity-potential function corresponding to free vibration of the bare hull in each normal mode. Very simple, yet accurate, strip formulas for estimating fluid velocity-potential function, the bare hull velocity potential, and associated velocity components, are derived for the case of hull vertical vibration. (Author).
