The phrase "ash flying" is correct and usable in written English.
It can be used to describe the movement of ash particles, often in the context of a fire, volcanic eruption, or similar event.
Example: "As the fire raged on, ash flying through the air created a surreal and haunting atmosphere."
Alternatives: "ash drifting" or "ash swirling".
This will send ash flying over your food.
There is so much smoke and white ash flying around it almost looked like it was snowing at times.
The Peñuelas community didn't know about the new deposits brought in last summer, Moreno said, but figured it out when they saw trucks heading toward the landfill, ash flying behind them.
Perhaps it's unfair that a politician's response to crisis will forever be measured against that of New York Mayor Rudolph W. Giuliani on Sept. 11, 2001, striding the streets of Manhattan with ash flying and face mask in hand, ordering New Yorkers to march north to safety and away from the cratered remains of the World Trade Center towers.
Bricks were cast using self-compacting mixtures of bottom ash, fly ash and cement eliminating both pressing and firing.
The optimum ratio of bottom ash, fly ash and cement was found to be 1 1 0.45 for better performance of bricks.
Panipat pond ash shows higher compression index as compared to reported Indian pond ashes, fly ashes and sand.
The influences of fly ash and fly ash cenosphere contents on the physical, mechanical, and thermal properties of GLECC mixtures were experimentally investigated.
It has been observed that yield stress decreases as the replacement level of rice husk ash and fly ash increases.
The angle of friction of Panki and Panipat pond ashes (33.04° 37.68°) are in the range of angle of friction of reported Indian pond ashes and fly ashes, United State fly ashes and sand (25° 41.7°).
Recycling of coal ash (fly ash) with waste glass was also investigated (Tamaki et al. 2006; Nishida 2009, 2010).
