公开(公告)号：US08944142B2

公开(公告)日：2015-02-03

申请号：US14094350

申请日：2013-12-02

Applicant: Helmholtz-Zentrum Dresden-Rossendorf E.V. ,  Technische Universitaet Dresden

Inventor： Petr A. Nikrityuk ,  Sven Eckert ,  Dirk Raebiger ,  Bernd Willers ,  Kerstin Eckert ,  Roger Grundmann ,  Gunter Gerbeth

IPC: B22D27/02 ,  B22D27/04 ,  B01F13/08

CPC classification number: B22D27/02 ,  B01F13/0809 ,  B22D27/045 ,  C21C1/06 ,  F27D27/00 ,  Y10T137/0391 ,  Y10T137/206

Abstract: The invention relates to a method and to a device for the electromagnetic stirring of electrically conductive fluids in the liquid state and/or in the state of onsetting solidification of the fluid, using a rotating magnetic field that is produced in the horizontal plane of a Lorentz force. The aim is to achieve an intensive three-dimensional flow on the inside of the fluid for mixing in the liquid state up to the direct vicinity of solidifying fronts, and to simultaneously ensure an undisturbed, free surface of the fluid. The solution is to change the direction of rotation of the magnetic field rotating in the horizontal plane at regular time intervals in the form of a period duration, wherein the frequency of the directional change of movement of the magnetic field vector is adjusted such that in the state of mixing the liquid fluid a period duration is adjusted between two directional changes of the magnetic field during a time interval as a function of the adjustment time with the condition (I) 0.5·ti.a

Abstract translation: 本发明涉及一种用于电磁搅拌处于液体状态的导电流体和/或处于开始凝固状态的装置，该方法和装置使用在洛伦兹的水平面中产生的旋转磁场 力。 目的是在流体内部实现强烈的三维流动，以液态混合直到固化前沿直接附近，同时确保流体的不受干扰的自由表面。 该解决方案是以周期持续时间的形式以规则的时间间隔改变在水平面中旋转的磁场的旋转方向，其中调整磁场矢量的方向移动变化的频率，使得在 混合液体的状态在时间间隔内在磁场的两个方向变化之间调整周期持续时间，作为调节时间的函数，条件（I）为0.5·ti.a

公开(公告)号：US20250138114A1

公开(公告)日：2025-05-01

申请号：US18705867

申请日：2022-11-04

Applicant: Helmholtz-Zentrum Dresden-Rossendorf e.V.

Inventor： Zhe Lei ,  Barbara Fritzsche ,  Kerstin Eckert

IPC: G01R33/10 ,  G01R33/022

Abstract: The invention relates to a measuring assembly (10) for determining a distribution of the magnetic gradient force, comprising a probe body (20) in which a hollow space (25) is formed. There is a probe suspension (30) in the hollow space (25), which contains a fluid (31) and at least one diamagnetic particle (35). A measuring device (40) is designed to determine a distance d of the diamagnetic particle/s (35) relative to a reference plane (29) on the probe body (20). A probe positioning unit (60) is designed to determine a geometric location of the hollow space (25) and/or the at least one particle (35) relative to a stationary reference location (69) outside the probe body (20).