Today I was working on physics type stuff again. Actually I had two issues, the first was how to combine inertia’s, that is, if you have a rotational velocity that’s then geared to another rotational velocity, what’s the total inertia only taking the first velocity into account? I’ll leave that as an exercise to the reader. The second was modelling a turbo charger. Now I have a large sample that takes into account the air pressure, temperature, chamber size, density of air and turbine dynamics. Basically it uses full computational fluid dynamics (CFD) to model a turbo charger. This is rather complicated. So what’s a turbo charger after all? Well its a turbine powered by an exhaust which drives a compressor, the output of this forces air back into the engine. So a couple of things to take into account, a turbo is basically a big wheel, this has mass and a radius so has an inertia. Inertia is rather useful as it gives a ‘willingness’ or rather lack of it, to change direction. This means it takes a while for it to spin up and spin down again. So if you drive the wheel from the potential energy of the engine (which is quite handy as when it’s not under load the potential energy is quite low, when under load it’s greater, thanks to inertia again). So if you tap off this energy then make a deduction from it based on the square of the wheel velocity (most things that offer resistance are squared, air resistance for example), use that to drive the wheel. Then use the wheel velocity to add to the torque of the engine. You then have a fairly good turbo model which has lag and boost and acts pretty much how a turbo should. And no fluids are involved.

Apart from that I walked the dog and went to Body Combat. That was fun. My paint stripper appears to have done its job. Unfortunately I still have half the room to do. Did some more Japanese. Watched ‘Celebrity Wedding Planner’ with Harry from TOWIE. He’s cute but I think I’d have to gag him.

So today I was pretty much flat out on physics calcs. Had an interesting one to do with inertia and gearing. If you have an object that’s rotating it has an inertia on an axis, now if that goes through a gear, say 2:1 the output object is now moving twice the speed. If they both have the same mass then they would have the same inertia at the same velocity, so if the second one is twice the velocity then it should be twice the inertia, so the inertia of the whole thing is three times the original (1+2). However that’s wrong. If you work out the energy produced (which is quite handy as the energy calc uses inertia) then I’ve actually managed to prove Einstein wrong and create about twice as much energy as I put in. I think my math may be wrong.

My paint stripper has arrived. Lots and lots of it. But no doubt not enough.

Walked the dog. Did Body Pump, played with inertia. Now late, now time for a bath.

So yesterday started far too early as normal with taking the dog to day care. Mind you I consider it just a bit of sleep distraction as I’m soon back in bed. Still working on physics stuff, again, can’t really say too much but things are coming together now. Cleaners arrived, made a hell of a racket. I picked up the dog and then went out for a run. Came back and did some more Japanese. Then it was the Sony conference which I watched the streaming of. They announced the ‘Playstation 4’, which is basically an 8 core PC with unified memory and a powerful GPU. This will certainly make developers happy with no weird SPU’s to deal with. Streaming processors were an interesting if slightly crap idea. Every man and his dog (well except mine) knows how to code for x86. So there’s definitely a smaller learning curve. Watched shite telly then went to bed.

Today was very much like yesterday, similar sort of work, but almost coming to the end of this section now. Just some tidying up to do and add a couple of features. Went out running, it’s Jamie’s turn to walk the dog. My paint stripper hasn’t arrived, which is slightly annoying as I do want to get on with that on Sunday, so hopefully will turn up tomorrow. Spent the evening doing another Japanese lesson, it is getting a lot harder now and I’m only on unit two of ten. But I have all my flash cards and I’m sticking at it. Practice makes perfect, well at least acceptable anyway.

Right it’s torture porn night, I still have that film to get through that I’ve had for a month now. So shower, salad and porn.

Started the day late. It’s a Monday after all. Really bad gas. I think it’s caused by too many currants. Today I’ve been mainly working on physics again, simulating friction transfers. Now there’s a lovely equation to get your head around on a Monday morning.

Walked the dog very late in the afternoon. Had lunch. Did more friction shit. Went to the gym and did Body Combat, was fun. Came back and stuck to things. Sorted out Jamie’s passport application. Now I’m somewhat tired. Still have to add something to wine vat. Oh and I have a ‘onesie’ to try on.

Didn’t get up early, but then again got up early enough to avoid any kind of sex. So I did the accounts. We then went out and visited a kennels for Sasha. It’s a small place, but all the dogs go out and run round together. Sasha is very social so I think she will enjoy it there, so we have booked her in.

Came back and picked up all the dog shit. Had lunch (washed hands in between). Checked on wine. The Chardonnay has finished fermenting so I’ve added the stabiliser. I did give it a quick taste and it appears to be pretty good. Now have to wait for it to clear and settle. The red is still bubbling away, although at somewhat a slower pace now.

Went out for a run. Basically covered the whole circle of the Stokes. Came back and did my next Japanese lesson. All going well. I’ve finished the first unit now. Will do the review stuff and then move on to unit two.

We then popped in Sarah’s to give my nephew his birthday present. Came back and finished Japanese for the day.

I’ve come to the conclusion that I’m never going to finish off the dinning room myself, so I think I will put a little away each month to get people in to start doing these tasks. And then I just do a Google. And find a specialist paint stripping place, that do nothing but paint strippers….and they do trial packs. I so have to order some and try it, if I can get that paint off safely without having to steam the bloody stuff I’ll be well impressed. Something fun for next weekend then for sure.

Right, bath time. I may even drink my own wine. Then I’m making pancakes.

Was having a very odd dream first thing, was staying at Andy and Justin’s place. We were about to go for a bit of a threesome then the doorbell went. It was the same woman who visited a couple of weeks ago from the god squad. She asked if I was okay and if I’d had a chance to think about any thing she had said. She then said that she knew I was in computers and wanted to show me a short passage from the Bible. As I’m not generally rude I locked the dog in the kitchen and listened to her quoting a passage about god designing everything. She then asked, “Who do you think designed computers, do you think it was God?”. I said, “No, It was Alan Turing and he was gay.”. She snapped her Bible shut an her and her patent leather shoe’d colleague buggered off rather sharpish.

I walked the dog. Took her to the vet again, she’s lost almost a kilo so she’s doing well. Did the shopping. Then ended up visiting a drum shop. Not that I have a noisy new hobby, but my nephew wanted some ‘silencer pads’. I then was rather out of my depth when a hobbit and his stick insect assistant then went around asking questions about drum sizes and ‘rock kits’. After a call to my sister I had a box of rubber things and was fifty quid lighter.

Walked into town, just in time for everything to shut so walked back again.

Quick shower, then we were off to Andy and Lisa’s. My white was a big hit, although it still tastes like a lot of sulphates to me. The Strawberry though was a great success all round. We talked lots of general chit-chat, ate Fajita’s and played ‘Robot Uno’, which was pretty good. Overall a nice evening, even the taxi driver was quite chatty and nice. Good to get out once in a while.