"fluctuation field" is correct and usable in written English.
You can use it to refer to an area where a specific phenomenon varies or fluctuates. For example, "The fluctuations of the electromagnetic field are studied in many branches of science."
It is assumed that a given molecule changes orientation of its nearest neighbours through the fluctuation field.
Then, the obtained synthetic fluctuation field is used as inflow condition for the subsequent Large Eddy Simulations taking into consideration different angles of attack.
Next, the mean velocity field, the turbulent kinetic energy field, the mean concentration field and the concentration fluctuation field are presented and analyzed.
The pressure fluctuations can then be obtained by solving the Poisson equation corresponding to the generated velocity fluctuation field by the KS.
Since for a particular case the coherent structures identified have a multi-scale signature, a wavelet-based decomposition technique was proposed as well to separate the contribution of the large- and small-scale flow structures to the pressure fluctuation field.
where P(E T) is the probability that the fluctuation field across the junction has the value E T (which may be in either direction).
The wake field is analyzed by particle image velocimetry (PIV), and the distribution of the mean and the fluctuation fields is found to conform to the concentration field of the exhaust gas.
The experimental set-up has been designed to reproduce a pressure fluctuations field beneath a turbulent boundary layer as close as possible to those in flight.
Turbulence generation methods allow the initialization and up-keeping of the velocity fluctuations field to promote the observed/needed turbulence in the flow.
In order to synthetically produce the unsteady inlet condition, a divergence-free and spatially correlated fluctuations field is generated by means of the Modified Discretizing and Synthesizing Random Flow Generator technique.
The Smol'yakov-Tkachenko model was used to estimate the fluctuation pressure field underneath turbulent boundary layer flows.
