Speed of soundA new equation for the speed of sound in sea water has been developed with validity not only for realistic combinations of the parameters salinity, temperature, and pressure, but with extension to pure water as well. This new equation, referred to ...
Equation (6a) is taken from equations (5.19) and (A9.10) in Reference 1. The speed of sound in a gas is directly proportional to absolute temperature. 2 c1 = c2 Tk,1 Tk, 2 Liquid A special formula for the speed of sound in a liquid is c = γBT ρo where γ is the ratio of...
I need help with these problems. 1. Speed of Sound in Air. Two seconds after firing a rifle at a target, the shooter hears the impact of the bullet. Sound...
The sonar equation is used in underwater signal processing to relate received signal power to transmitted signal power for one-way or two-way sound propagation. The equation computes the received signal-to-noise ratio (SNR) from the transmitted signal level, taking into account transmission loss,...
(34) is parabolic in a region Ω ⊂ Rn if for every choice of the function v(x), the matrix Λ = (ajk(x,v,Dv)) has a vanishing determinant for each x ∈ Ω. The equation in Section III.D is a parabolic equation. View chapterExplore book Outdoor Sound Propagation Dominique Haba...
From the discussion in §1.3, the equation of state for water may be written as: (2.11.2)ρ=ρ(θ,S,p), where ρ is the density (kg m−3), S is the salinity (psu) and p is the pressure (bar). Equation (2.11.2) states that the density changes (decreases) with increasing ...
of items (function names, keywords, etc.) that are known to EES. Function calls show the needed inputs. The selected item can be entered into the Equations window saving you from having to type it in. This Auto Complete window also provides access to the online help for any selected ...
For the active sonar operating in the reverberation-limited environment, reverberation is one of main factors restricting the performance exertion. 就工作在混响限制区域的主动声纳而言,混响成为限制声纳性能发挥的主要因素之一。 更多例句>> 3) Sonar equation 声纳方程 1. Firstly,it is discussed that the...
G. McColm, A simplified formula for viscous and chemical absorption in sea water. J. Acoust. Soc. Am. 103, No 3 (1998), 1671–1672. http://dx.doi.org/10.1121/1.42125810.1121/1.421258Search in Google Scholar [4] T. M. Atanackovic, A modified Zener model of a viscoelastic body. ...
The Navier–Stokes equations can be derived in a similar fashion to the conservation of mass (see for further details, e.g. Lewis et al. (1996)). For a viscous incompressible flow they read (3.53)dρfv¯rf,idt=−∇pf+μf∇2v¯rf,i+ρfbi where bi is the vector of body ...