"fluctuation around" is a correct and usable phrase in written English.
You can use it when referring to something that changes up and down without a clear pattern, like a stock market index or a person's mood. For example: "The stock market index had been fluctuating around the same level for weeks before suddenly dropping yesterday."
The amplitude of the pressure fluctuation around the stator leading edge decreases at both endwalls, but increases at the mid-span in the curved rotors.
We prove that the Cauchy problem for the fluctuation around the Maxwellian distribution enjoys Gelfand Shilov regularizing properties with respect to the velocity variable and Gevrey regularizing properties with respect to the position variable.
The study of amplitude scintillation on GPS radio links is usually done after detrending the time series of the transmitted power so to define scintillations as the chaotic fluctuation around a unitary value.
It is shown that the fluctuation around the steady quantity increases with decreasing time step in the overdamped white-noise algorithm, however, a massive white-noise technique greatly reduces this spurious drift, and the result can converge to the correct value if the added inertia approaches zero.
The fluctuation around the centerline changed remarkably, however.
The micro-deformation ε ||| z) fluctuation around the ε || z) causes only broadening of XDP.
The GNM has been successful in predicting atomic fluctuations around an energy minimum.
Larré, P.-É., Recati, A., Carusotto, I. & Pavloff, N. Quantum fluctuations around black hole horizons in Bose Einstein condensates.
It is highly concentrated, with constant-order fluctuations around nα∗−c∗logn for explicit constants α∗(d) and c∗(d).
Visualization occurs through concentration on path integral, mean-field theories and semiclassical picture of fluctuations around mean-field state.
Then, small fluctuations around the mean envelope are considered to be small noises.
