in the small diameters (or depth for rectangular one) the trickle flow can't be exist. am I right? what is the threshold?
Hi Mohsen Alipoor,
There is no sufficient data to answer. Is it liquid or solid flow, or maybe multiphase? What is the Substitute diameter (equivalent) of the channel? Is it physical or simulated flow? Lots more data needed. (I know about the labels/topics You chcked but You need to specify all the factors. Otherways do not know how to answer).
Best regards,
Stanislaw Anweiler
Hi Stainstaw Anweiler,
I want to make a trickle regime that gas and liquid simultaneously flow through a soild porous medium and the problem is with making the physical flow. I read some papers about trickle flow and the minimum depth that i found was about 3cm for rectangular cross section and in one paper the *hydraulic* diameter for an annulus bed was 2cm. for the most 2D beds, depth was smaller than 1cm. but i don't want a 2D bed.
I will be happy if it's possible to make a rectangular cross section trickle bed with 1.4cm depth.
thanks for your answer
Dear Mohsen Alipoor, in multiphase reactors (trickle bed one of them) the hydrodynamics parameters are the main factors that determine the design requirements of the reactor. It is well known that the trickle bed reactor included low interaction regime (trickle flow regime).This regime is observed at low gas and liquid flow rates and is characterized by a weak gas-liquid interfacial activity and a gravity-driven liquid flow. Therefore, as a result, the gas and liquid flow rates and the physical properties of the liquid determine the required design dimensions.
(Note: in lab scale (or pilot plant scale) the reactor diameter between (5-10) cm is more favourable. On the other hand, the reactor diameter greater than 15 cm will be acceptable as a industrial scale reactor.
Then, as a results the depth of trickle flow regime will be varied according to these requirements (hydrodynamics) and will be flows the hydrodynamics behaviour.
Best regards
- Badges
- Science topic