{"product_id":"quantum-turbulence-decay-of-grid-turbulence-in-a-dissipationless-fluid-von-shu-chen-liu","title":"Quantum Turbulence:Decay of Grid Turbulence in a Dissipationless Fluid","description":"\u003cp\u003eQUANTUM TURBULENCE : DECAY OF GRID TURBULENCE IN A DISSIPATIONLESS FLUID   We produced grid turbulence in liquid helium at 520 mK to compare with classical experiments and theories. Above T = 1 K, with viscosity present, it has been shown that grid turbulence is equivalent to homogeneous isotropic turbulence in a classical fluid. We seek to investigate the nature of grid turbulence when viscosity is zero. Specifically, in the absence of viscosity in a quantum fluid, through what path does the turbulence decay?   To produce grid turbulence, a magnetically shielded superconducting linear motor was designed and built to accelerate and decelerate the grid rapidly in a short distance (~ 1 mm), and achieve glide speeds up to 1 m\/s, when driven with the properly shaped current pulse. We measured the decay of the turbulence produced by calorimetry technique.   Recent theory suggests the decay occurs through a Kelvin-wave cascade on the vortex lines which couples the initially large turbulent eddies to the short wavelength phonon spectrum of the liquid, yielding a characteristic rate of temperature rise. Initial measurements support the Kelvin wave cascade theory.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783838315386\"\u003e\u003ch3\u003eKelvin wave cascade theory, magnetically shielded superconducting linear motor, superfluid helium-4 and calorimetry technique\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783838315386","offer_id":39497092497501,"sku":"9783838315386","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/3429bbb0-a212-4f91-a200-e07f9821ccb8.jpg?v=1757741814","url":"https:\/\/shop.autorenwelt.de\/products\/quantum-turbulence-decay-of-grid-turbulence-in-a-dissipationless-fluid-von-shu-chen-liu","provider":"Autorenwelt Shop","version":"1.0","type":"link"}