Sprinkler Irrigation - Science topic

Tomchilatib sug'orish orqali suv tuproqning qaysi qatlamigacha yetib boradi?

Hello Prof.Sean,

Check on this website

Dear respected Aymen Al Al Baaj,

I have article on average infiltration rate for soil exposed to different tillage operations. The soil analysis for the infiltration rate is sandy soil. You can check this article.

Hope it would help.

Best regards

Kifilideen

Pl. go through this link:

You may found there a key formula to compute GW net rechage component for Indian scenario, although Paper from Dr. C P Kumar (first comment in trailing text) would be really helpful and well explained.

Thanks Raphael for your suggestions

Dear Noha , you have a genuine issue to investigate . I am enclosing some our PDFs fro further reference of yours. Hope , they will be of some use for your work.

Dear KS, your question is very pertinent but I doubt , sprinkler irrigation will be handy under such circumstances where water scarcity is a pivotal issue, since sprinkler  irrigation is  a type of rainfall -like pressurised irrigation  . In-line drip irrigation probably holds far  more promise than sprinkler irrigation . Sprinkler irrigation consumes  more water than drip irrigation . however , with some of the developments in sprinkler irrigation like whirligig sprinkler , gun sprinkler, perforated pipes etc., it has shown some good promise . Provision of real time  pulsing as per diurnal variation in  temperature, VRT , sprinkler irrigation has attained some real utility in field. Despite all these developments , issues relating  droplet ballistics  are still un-resolved. Find below some PDFs , hope , they will be of some further use .

SAR= Na/ (Ca+Mg)/2 (where, all ionic concentrations are expressed in milli equivalents per litre.) There were no much variations in SAR concentration between 2005 and 2008. In 2005,in pre­ monsoon period SAR values are >26 in north eastern portion and the lowest ratio locations of <10 were observed in north western, southern parts of the District and it stretches further west to eastern parts of the study area.

Hi, glad you found it useful. I am sure you could use different programs but I used Excel with a simple IF function. Lets say for example that column A is time, column B is wind speed, and column C is wind direction. If you decide to use 8 variables (N, NE, E, SE, S, SW, W, NW), column D could be North-East, centering around 45 degrees: with function: =IF(C#>22.5,IF(C#<67.5,B#,-2),-2); where -2 is a random number indicating the times for which wind direction is not between 22.5 and 67.5 degrees. For all directions between 22.5 and 67.5 degrees the values in the column will be equal to the wind speed (B#). Likewise, East would center around 90 degrees where: =IF(C#>67.5,IF(C#<112.5,B#,-2),-2). The same works for SE, S, SW, W, NW. For North the equation is: =IF(C#>337.5,B#,IF(C#<22.5,B#,-2)). Subsequently you can plot each variable against time and adjust the y-axis to not show values below zero.

Hello All,

I was able to come across a really useful link, which contains some cool, free, and really easy to use statistical application for irrigation water management plan and I thought this could be of use to some of you now or in the future. As per my initial question, from the list of applications I will try the AACALC7 - [very comprehensive hydraulics analysis of sprinkler/spray systems] available and can be downloaded at http://freehc.net.

Thank you all. However, recommendations/comments are still welcome. Try to visit the link and explore some of their cool free software.

Jenkins

I work with mist heads and a bit more complicated atomizers and found that the same heads mounted on risers and 'hanged' from a ceiling generate different wetted radii. Hanging ones were giving a longer throw, but could not relate that to any function of a stem length (for water mist therr is also a problem of humidity and secondary breakup, you do not have). Another issue is that the avergage droplet size also influences the distance droplets travel, as it is related to the shape drag generated by every single travelling droplet moving in still air. In short, I believe there is no general or suitable formula, but you may have a chance in relating experimentally found wetted radii for sprinkler heads instaled on risers and for the 'hanging' ones.