The steam bubbles form a geyser pump, causing an upward flow.

Pressure exerted on the solar atmosphere by the intense magnetic fields dampens the upward flow of hot gas from the interior.

In forward flight, there is no upward flow (upflow) of air in the hub area.

This upward flow of information and suggestions for change was something new in Russian history.

We know that an upward flow exists near the center of the well, and I'm convinced that a second leads downward next to it.

In fact, there's a public ambivalence about the upward flow of money.

The tide of conscious, dark power in my mind, checked for that instant, resumed its upward flow.

Elderly males dominated traditional society, and there was a marked "upward flow of wealth" to such men.

This upward flow is known as convection.

More forceful upward flow creates pillars - which are essentially dewatering pipes.