Thank you so much for this video Adriaan! It took me another six months to remember to find this video. It's great to come up with optimum designs, then have the customer give you packaging constraints, and our CNC can only do so much :) I love the BSFC optimiser, and I'm thinking of minimizing pumping loss at cruise rpm (minimising fuel consumption). I'll definitely watch this video many times and try the experiments.
@@AdriaanVanNiekerk Hi Adriaan. I should have asked about intake to exhaust valve ratios. How do I optimise exhaust pumping loss vs delivery ratio/BMEP and compression (expansion) ratio? This video makes me think this is possible. WAVE assumes throat diameter based on valve diameter - which can become a variable. Using flow coefficients instead of cfm to account for variable valve diameters. Runner diameter needs to be proportional to throat diameter, and taper (area schedule). What do you think? How do you handle part throttle?
Hi. Nice videos, they all have been really awsome and helpful. Can you show how to model and simulate a 2 stroke engine? I'm having trouble modeling the multiple ports. It would be great if you can show something about that.
In terms of a catalyst you will only be able to simulate the pressure drop over it. If you want to investigate the chemical reactions in the catalyst, you will have to build a model and connect it to WAVE.
With a given data sheet , if we want to optimise valve timing and Fueling, what all to be be targetted? Spark advance, burn duration, afr is sufficient?
That is something that you need to play around with. If you add them as input parameters and the results show it has little to no effect on the output, then you can remove them. It is a bit of an iterative exercise
@@madhurimaisbiswas The valve operlap you can specify in the valve settings. The SI wiebe function does not have an option to specify when the spark happens, but rather just when combustions starts. You could always assume they are one in the same 🤷♂️
Hi Adriaan, i have been trying to get my experiment to work, but everytime i run it it shows an error reporting that for some runs cases the sum file does not exist, i checked the folder and it appears to be true, any ideas of why this is happening and how to fix? Cheers!
Yes you can - I think the most common attribute that you can optimise is the volume. Obviously if you are interested in another attribute, you can optimise that as well :-)
Hi there! It depends on your use case really. WAVE is a simulation tool that can be used to either understand how the engine works that your are simulating or to optimise it and test different configurations. Most industrial applications I have seen have used WAVE for engine optimision or concept design testing. 👍🏻
@@AdriaanVanNiekerk thanks for letting, I am msc automotive engineering student planning to work on MSc project on internal combustion engine efficiency with wave model simulation and I currently live in Staffordshire area could you please assist me in engine modelling if I needed your guidance for simulation. If possible could you please share your email details so I can contact you. Thanks
@@dearcomradeinuk1138 exciting! I am happy to help and answer any questions you might have when you use WAVE. It might be best if you join the Discord server: discord.gg/GhvzET7Hzb where you can then ask your questions and share screenshots when needed
@@AdriaanVanNiekerk Actually I want to add real time throttle response in the engine and also want to see the sound attenuation is achieved by my muffler or not at different rpms
Hey Adriaan, how come you put the variable in the discretization length and not overall length? Also, I keep getting an error after trying to run my experiment that says "summary file does not exist for..... there is insufficient data for curve fitting" any ideas? Cheers for your video and help!
Hi Nathan. That is an error on my part - it should be overall length as you say. The error you get could be because of not enough runs? Try adding more runs and see it that helps?
@@adityadadia1838 Hi, I have the same issue. I am trying to optimise the length of 3 intake runners in 20 runs. I can't view any results because of this insufficient data for curve fitting issue. Did you manage to fix this issue in anyway?
You can measure load with a gauge connected to the engine block. With that reading you can optimize it using the byilt in tools I show in this video 💪🏻
