A non-perturbative anemometric and flow visualization technique
نویسندگان
چکیده
منابع مشابه
A non-perturbative anemometric and flow visualization technique
2014 We present a new visualization technique of an hydrodynamic flow using a thermal grid, « written » in the liquid by means of a pulsed laser, and whose image is subsequently formed, using standard optics, by illumination by a continuous laser. The experiment gives access to a new Doppler-anemometric technique which does not involve the presence of particles in the fluid and to an instantane...
متن کاملFlow Visualization Around a Non - Circular Tube
The flow behavior around a cam shaped tube in cross flow has been investigated experimentally using flow visualization and pressure distribution measurement. The range of attack angle and Reynolds number based on an equivalent circular diameter are within 0 ≤ α ≤ 360˚ and 2 x 104 < Reeq < 3.4 x 104, respectively. The pressure drag features are clarified in relation to the flow behavior around t...
متن کاملSolving non-perturbative flow equations
Nonperturbative exact flow equations describe the scale dependence of the effective average action. We present a numerical solution for an approximate form of the flow equation for the potential in a three-dimensional N -component scalar field theory. The critical behaviour, with associated critical exponents, can be inferred with good accuracy. Exact non-perturbative renormalization group equa...
متن کاملMathematical Model of Unsteady Groundwater Flow Through Aquifers and Calibration Via a Non-Linear Optimization Technique
In this study, the general partial differential equation of unsteady groundwater flow through non-homogeneous and anisotropic aquifer was solved by the fully implicit finite difference method with control volume approach. The calibration of permeability and storage coefficients as model parameters was performed by a transformation technique and application of Powell's non-linear optimization me...
متن کاملPerturbative and non-perturbative QCD
In these lectures we give a concise introduction to the ideas of renormalon calculus in QED and QCD. We focus in particular on the example of the Adler D function of vacuum polarization, and on relations between perturbative renormalon ambiguities and corresponding non-perturbative Operator Product Expansion (OPE) ambiguities. Recent work on infrared freezing of Euclidean observables is also di...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal de Physique Lettres
سال: 1980
ISSN: 0302-072X
DOI: 10.1051/jphyslet:019800041021051900