irrotational circulation - meaning and definition. What is irrotational circulation
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What (who) is irrotational circulation - definition

CONCEPT IN VECTOR CALCULUS
Irrotational; Irrotational field; Gradient field; Potential vector field; Conservative field; Curl free field; Curl-free vector field; Irrotational vector field; Irrotational flow; Irrotational Flow
  •  '''E''', electric field strength
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  • The above vector field <math>\mathbf{v} = \left( - \frac{y}{x^2 + y^2},\frac{x}{x^2 + y^2},0 \right)</math> defined on <math>U = \R^3 \setminus \{ (0,0,z) \mid z \in \R \}</math>, i.e., <math>\R^3</math> with removing all coordinates on the <math>z</math>-axis (so not a simply connected space), has zero curl in <math>U</math> and is thus irrotational. However, it is not conservative and does not have path independence.
  • Line integral paths used to prove the following statement: if the line integral of a vector field is path-independent, then the vector field is a conservative vector field.
  • Depiction of two possible paths to integrate. In green is the simplest possible path; blue shows a more convoluted curve

Dual circulation         
ECONOMIC TERM OF CHINA
Domestic-international dual circulation; Dual circulation strategy
Domestic-international dual circulation () is a strategy to reorient China's economy by prioritizing domestic consumption ("internal circulation") while remaining open to international trade and investment ("external circulation"). The first academic study on dual circulation defined it as "the domestic consumption-driven economic rebalancing to achieve sustainable economic development".
Pulmonary circulation         
  • [[3D rendering]] of a [[high resolution computed tomography]] of the [[thorax]]. The anterior thoracic wall, the airways and the pulmonary vessels anterior to the [[root of the lung]] have been digitally removed in order to visualize the different levels of the pulmonary circulation.
  • The opening page of one of Ibn al-Nafis's medical works
  • Image showing main pulmonary artery coursing ventrally to the [[aortic root]] and [[trachea]]. The right pulmonary artery passes dorsally to the [[ascending aorta]], while the left pulmonary artery passes ventrally to the [[descending aorta]].
JOURNAL
Pulmonary Circulation journal; Pulmonary Circulation (journal); Pulm. Circ.; Pulm Circ
The pulmonary circulation is a division of the circulatory system in all vertebrates. The circuit begins with deoxygenated blood returned from the body to the right atrium of the heart where it is pumped out from the right ventricle to the lungs.
Pulmonary Circulation         
  • [[3D rendering]] of a [[high resolution computed tomography]] of the [[thorax]]. The anterior thoracic wall, the airways and the pulmonary vessels anterior to the [[root of the lung]] have been digitally removed in order to visualize the different levels of the pulmonary circulation.
  • The opening page of one of Ibn al-Nafis's medical works
  • Image showing main pulmonary artery coursing ventrally to the [[aortic root]] and [[trachea]]. The right pulmonary artery passes dorsally to the [[ascending aorta]], while the left pulmonary artery passes ventrally to the [[descending aorta]].
JOURNAL
Pulmonary Circulation journal; Pulmonary Circulation (journal); Pulm. Circ.; Pulm Circ
Pulmonary Circulation is a peer-reviewed medical journal covering the fields of pulmonary circulation and pulmonary vascular disease. It was established in 2011 and is published by Sage Publications on behalf of the Pulmonary Vascular Research Institute, of which it is an official journal.

Wikipedia

Conservative vector field

In vector calculus, a conservative vector field is a vector field that is the gradient of some function. A conservative vector field has the property that its line integral is path independent; the choice of any path between two points does not change the value of the line integral. Path independence of the line integral is equivalent to the vector field under the line integral being conservative. A conservative vector field is also irrotational; in three dimensions, this means that it has vanishing curl. An irrotational vector field is necessarily conservative provided that the domain is simply connected.

Conservative vector fields appear naturally in mechanics: They are vector fields representing forces of physical systems in which energy is conserved. For a conservative system, the work done in moving along a path in a configuration space depends on only the endpoints of the path, so it is possible to define potential energy that is independent of the actual path taken.