Optical Transmission through the Turbulent Atmosphere
Abstract
A turbulence chamber (0.78 m x 0.23 m x 2.59 m) consisting of 10 small electric heater/blowers with 2 mm aluminum wire meshes can generate the nearly homogeneous isotropic turbulence with the region of 0.5 m x 0.05 m x 2 m. The temperature structure constant was obtained from the temperature structure function measurements using a differential microthermocouple system. The refractive index structure constant was calculated from the temperature structure constant at the average temperature 53 C. From the measured power spectrum of temperature fluctuations and the average wind velocity 0.41 m/sec we determined the inner and outer scales of turbulence l sub 0 = 5.0 nm and L sub 0 = 6.5 cm, respectively. The measured temperature structures fluctuations satisfy the 2/3 and -5/3 power similarity laws, characteristics of the inertial subrange, respectively.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1978
- Accession Number
- ADA056746
Entities
People
- Hideya Gamo
Organizations
- University of California, Irvine