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Description
PH 3451: Fundamental Acoustics. Instructor: Prof. Bruce Denardo, Department of Physics, NPS (Naval Postgraduate School).
Development of, and solutions to, the acoustic wave equation in fluids; propagation of plane, spherical and cylindrical waves in fluids; sound pressure level, intensity, and specific acoustic impedance; normal and oblique incidence reflection and transmission from plane boundaries; transmission through a layer; image theory and surface interference; sound absorption and dispersion for classical and relaxing fluids; acoustic behavior of sources and arrays, acoustical reciprocity, continuous line source, plane circular piston, radiation impedance, and the steered line array; transducer properties, sensitivities, and calibration. Laboratory experiments include longitudinal waves in an air-filled tube, surface interference, properties of underwater transducers, three-element array, speed of sound in water, and absorption in gases. Textbook: Kinsler, Frey, Coppens, and Sanders, Fundamentals of Acoustics, 4th Edition.
Course Curriculum
- Lecture 01 – Introduction, Acoustic Wave Equation: Fluid Description Unlimited
- Lecture 02 – Acoustic Wave Equation: Equation of State, Equation of Continuity Unlimited
- Lecture 03 – Linear Wave Equation: Speed of Sound Unlimited
- Lecture 04 – Problem Set: Acoustic Wave Equation Unlimited
- Lecture 05 – Plane Waves, Energy Density Unlimited
- Lecture 06 – Energy Density, Acoustic Intensity and Wave Impedance Unlimited
- Lecture 07 – Spherical Waves Unlimited
- Lecture 08 – Problem Set: Plane Waves, Energy Density, Acoustic Intensity, Spherical Waves Unlimited
- Lecture 09 – Decibel Scales, Transducers Unlimited
- Lecture 10 – Reflection and Transmission Unlimited
- Lecture 11 – Problem Set: Decibel Scales, Transducers Unlimited
- Lecture 12 – Reflection and Transmission: Normal Incidence Unlimited
- Lecture 13 – Reflection and Transmission: Oblique Incidence Unlimited
- Lecture 14 – Reflection and Transmission: Method of Images, Far Field of a Two-Point Source Unlimited
- Lecture 15 – Problem Set: Reflection and Transmission Unlimited
- Lecture 16 – Radiation from a Pulsating Sphere, Acoustic Reciprocity Unlimited
- Lecture 17 – Radiation: Acoustic Reciprocity, Uniform Line Source Unlimited
- Lecture 18 – Problem Set: Radiation Unlimited
- Lecture 19 – Radiation: Helmholtz Resonators Unlimited
- Lecture 20 – Radiation: Baffled Plane Circular Piston Unlimited
- Lecture 21 – Far Field Radiation Pattern of a Baffled Piston, Radiation Impedance Unlimited
- Lecture 22 – Radiation Impedance and Examples, Properties of Sources Unlimited
- Lecture 23 – Problem Set: Baffled Piston, Radiation Impedance Unlimited
- Lecture 24 – Radiation: Directivity Unlimited
- Lecture 25 – Attenuation of Sound: Thermodynamics Example, Viscosity Unlimited
- Lecture 26 – Problem Set: Directivity, Attenuation of Sound Unlimited
- Lecture 27 – Attenuation of Sound: Complex Speed of Sound, Thermal Losses Unlimited
- Lecture 28 – Attenuation of Sound: Classical Absorption Coefficient, Molecular Thermal Relaxation Unlimited
- Lecture 29 – Problem Set: Attenuation of Sound Unlimited
- Lecture 30 – Attenuation of Sound: Acoustic Calculation Unlimited
- Lecture 31 – Attenuation of Sound: Absorption of Sound in Air and Water Unlimited
- Lecture 32 – Problem Set: Attenuation of Sound Unlimited
- Lecture 33 – Sound in Pipes: Resonance in Pipes Unlimited
- Lecture 34 – Sound in Pipes: Power of Radiation from Open Ends, Wave Pattern inside a Pipe Unlimited
- Lecture 35 – Absorption of Sound in Pipes Unlimited
- Lecture 36 – Sound in Pipes: Driver-Pipe System Unlimited
- Lecture 37 – Acoustics in Cavities Unlimited
- Lecture 38 – Problem Set: Sound in Pipes Unlimited
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